FA-64801 / Clinical triage scoring / Open access
Cervical spine imaging decision rule: older age high-risk threshold · case 01
A 65-year-old is assessed for range of motion instead of being imaged.
ROOT CAUSE
The age criterion excludes exactly 65.
VERIFIED REPAIR
Treat age >= 65 as high risk on its own.
Unsuccessful approach: Requiring a dangerous mechanism as well removes age as an independent criterion.
Case contract
Input {age, gcs, dangerous_mechanism, paresthesias, simple_rear_end, sitting, ambulatory, delayed_onset, no_midline_tenderness, rotate_left, rotate_right (degrees)}. Toy rule: age < 16 or gcs < 15 NOT_APPLICABLE. High risk (age >= 65, dangerous mechanism or paresthesias) -> IMAGE. If none of the low-risk factors (simple rear-end collision, sitting, ambulatory, delayed onset, no midline tenderness) is present -> IMAGE. Otherwise NO_IMAGE when active rotation reaches 45 degrees both left and right, else IMAGE. Return {decision}.
Why this case matters
Imaging decision rules chain any-of and all-of gates; confusing the quantifiers or thresholds is a distinct defect at each gate.
1 / The failure
Exit 1"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(x):
if x['age'] < 16 or x['gcs'] < 15:
return {'decision': 'NOT_APPLICABLE'}
if x['age'] > 65 or x['dangerous_mechanism'] or x['paresthesias']:
return {'decision': 'IMAGE'}
low = [x['simple_rear_end'], x['sitting'], x['ambulatory'], x['delayed_onset'], x['no_midline_tenderness']]
if not any(low):
return {'decision': 'IMAGE'}
if x['rotate_left'] >= 45 and x['rotate_right'] >= 45:
return {'decision': 'NO_IMAGE'}
return {'decision': 'IMAGE'}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 51,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 61},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 31,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 21,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 31,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 26,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 52,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 62},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 32,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 22,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 32,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 27,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 53,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 63},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 33,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 23,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 33,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 28,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 54,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 64},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 34,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 24,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 34,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 29,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 55,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 65},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 25,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 35,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 30,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})]]
for label, args, expected in fixtures[N-1]:
check(label, solve(args), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| age exactly 65 | {'decision': 'NO_IMAGE'} | {'decision': 'IMAGE'} | Failed |
| age 64 with low-risk factors | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| single low-risk factor | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| two low-risk factors | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| all low-risk factors | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| rotation exactly 45 both ways | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| rotation limited to one side | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| paresthesias in ambulatory patient | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| paresthesias non-ambulatory | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| adolescent below applicability | {'decision': 'NOT_APPLICABLE'} | {'decision': 'NOT_APPLICABLE'} | Passed |
SHA-256 / 1a66c52ee9393a339aa6e18ef2f0a020aaf89b20b08be0d7c3dcd92c93478c7c
2 / The unsuccessful fix
Exit 1"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(x):
if x['age'] < 16 or x['gcs'] < 15:
return {'decision': 'NOT_APPLICABLE'}
if (x['age'] >= 65 and x['dangerous_mechanism']) or x['dangerous_mechanism'] or x['paresthesias']:
return {'decision': 'IMAGE'}
low = [x['simple_rear_end'], x['sitting'], x['ambulatory'], x['delayed_onset'], x['no_midline_tenderness']]
if not any(low):
return {'decision': 'IMAGE'}
if x['rotate_left'] >= 45 and x['rotate_right'] >= 45:
return {'decision': 'NO_IMAGE'}
return {'decision': 'IMAGE'}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 51,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 61},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 31,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 21,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 31,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 26,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 52,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 62},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 32,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 22,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 32,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 27,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 53,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 63},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 33,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 23,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 33,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 28,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 54,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 64},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 34,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 24,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 34,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 29,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 55,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 65},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 25,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 35,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 30,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})]]
for label, args, expected in fixtures[N-1]:
check(label, solve(args), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| age exactly 65 | {'decision': 'NO_IMAGE'} | {'decision': 'IMAGE'} | Failed |
| age 64 with low-risk factors | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| single low-risk factor | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| two low-risk factors | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| all low-risk factors | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| rotation exactly 45 both ways | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| rotation limited to one side | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| paresthesias in ambulatory patient | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| paresthesias non-ambulatory | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| adolescent below applicability | {'decision': 'NOT_APPLICABLE'} | {'decision': 'NOT_APPLICABLE'} | Passed |
SHA-256 / d2dfdb8e47581a6e021c9897ff10cde14d090b74dc32b72156b482241c50827b
3 / The verified repair
Exit 0"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(x):
if x['age'] < 16 or x['gcs'] < 15:
return {'decision': 'NOT_APPLICABLE'}
if x['age'] >= 65 or x['dangerous_mechanism'] or x['paresthesias']:
return {'decision': 'IMAGE'}
low = [x['simple_rear_end'], x['sitting'], x['ambulatory'], x['delayed_onset'], x['no_midline_tenderness']]
if not any(low):
return {'decision': 'IMAGE'}
if x['rotate_left'] >= 45 and x['rotate_right'] >= 45:
return {'decision': 'NO_IMAGE'}
return {'decision': 'IMAGE'}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 51,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 61},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 31,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 21,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 31,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 26,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 52,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 62},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 32,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 22,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 32,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 27,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 53,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 63},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 33,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 23,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 33,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 28,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 54,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 64},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 34,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 24,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 34,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 29,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})],
[('age exactly 65',
{'age': 65,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('age 64 with low-risk factors',
{'age': 64,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('single low-risk factor',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 55,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('two low-risk factors',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': True,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 65},
{'decision': 'NO_IMAGE'}),
('all low-risk factors',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': True,
'sitting': True,
'ambulatory': True,
'delayed_onset': True,
'no_midline_tenderness': True,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NO_IMAGE'}),
('rotation exactly 45 both ways',
{'age': 25,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 45,
'rotate_right': 45},
{'decision': 'NO_IMAGE'}),
('rotation limited to one side',
{'age': 40,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 35,
'rotate_right': 70},
{'decision': 'IMAGE'}),
('paresthesias in ambulatory patient',
{'age': 30,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('paresthesias non-ambulatory',
{'age': 35,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': True,
'simple_rear_end': False,
'sitting': True,
'ambulatory': False,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'IMAGE'}),
('adolescent below applicability',
{'age': 15,
'gcs': 15,
'dangerous_mechanism': False,
'paresthesias': False,
'simple_rear_end': False,
'sitting': False,
'ambulatory': True,
'delayed_onset': False,
'no_midline_tenderness': False,
'rotate_left': 60,
'rotate_right': 60},
{'decision': 'NOT_APPLICABLE'})]]
for label, args, expected in fixtures[N-1]:
check(label, solve(args), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| age exactly 65 | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| age 64 with low-risk factors | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| single low-risk factor | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| two low-risk factors | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| all low-risk factors | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| rotation exactly 45 both ways | {'decision': 'NO_IMAGE'} | {'decision': 'NO_IMAGE'} | Passed |
| rotation limited to one side | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| paresthesias in ambulatory patient | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| paresthesias non-ambulatory | {'decision': 'IMAGE'} | {'decision': 'IMAGE'} | Passed |
| adolescent below applicability | {'decision': 'NOT_APPLICABLE'} | {'decision': 'NOT_APPLICABLE'} | Passed |
SHA-256 / 4ae95c76837b99926340bb6dab1260432d77a024e4a10f2630f08710aa8c369f
Verification & scope
A deterministic toy software model with explicitly stipulated thresholds and formulas; it is not clinical guidance, not a validated medical calculator, and makes no claim of conformance to any published protocol. Numbered variants vary patient and order inputs. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.
Observations recorded using Python 3.12.14 at 2026-09-29T14:47:28.128533+00:00.
Case digest / 09b268d06682bdfc54355e296173cacc38216282135b020ce39cc956184072d6