FA-64761 / Clinical triage scoring / Open access
Inpatient fall risk score: furniture-walking aid · case 01
Patients holding on to furniture score like cane users.
ROOT CAUSE
Furniture walking is grouped with walking aids at 15 points.
THE FAILURE
Furniture walking is grouped with walking aids at 15 points.
Unsuccessful approach: Restoring furniture but omitting walker leaves walker users unscored.
Case contract
Input {last_fall_days (or null), secondary_dx, aid, iv, gait, mental}. Toy points: a fall within the last 90 days (inclusive) 25; secondary diagnosis 15; aid none/bedrest/nurse 0, crutches/cane/walker 15, furniture 30; IV access 20; gait normal/bedrest/immobile 0, weak 10, impaired 20; mental status "forgets" or "overestimates" (overestimates own ability) 15, "oriented" 0. Risk: 0-24 LOW, 25-44 MODERATE, >= 45 HIGH. Return {score, risk}.
Why this case matters
Nursing risk scores map categorical observations to weighted points; recency windows, category tables and band edges fail independently.
1 / The failure
Exit 1"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(x):
d = x['last_fall_days']
fell = d is not None and d <= 90
s = 25 if fell else 0
s += 15 if x['secondary_dx'] else 0
aid = x['aid']
s += 15 if aid in ('crutches', 'cane', 'walker', 'furniture') else 0
s += 20 if x['iv'] else 0
g = x['gait']
s += 20 if g == 'impaired' else 10 if g == 'weak' else 0
s += 15 if x['mental'] in ('forgets', 'overestimates') else 0
risk = 'HIGH' if s >= 45 else 'MODERATE' if s >= 25 else 'LOW'
return {'score': s, 'risk': risk}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[('no risk factors',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 0, 'risk': 'LOW'}),
('fall exactly 90 days ago',
{'last_fall_days': 90,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('fall a year ago',
{'last_fall_days': 301,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 20, 'risk': 'LOW'}),
('furniture walking',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'furniture',
'iv': False,
'gait': 'weak',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('walker user',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'walker',
'iv': False,
'gait': 'normal',
'mental': 'forgets'},
{'score': 45, 'risk': 'HIGH'}),
('weak gait',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'cane',
'iv': True,
'gait': 'weak',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'}),
('impaired gait',
{'last_fall_days': 10,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'impaired',
'mental': 'oriented'},
{'score': 60, 'risk': 'HIGH'}),
('score exactly 40',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'cane',
'iv': False,
'gait': 'weak',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('overestimates own ability',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'overestimates'},
{'score': 30, 'risk': 'MODERATE'}),
('score exactly 25',
{'last_fall_days': 31,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 25, 'risk': 'MODERATE'}),
('score exactly 45',
{'last_fall_days': 6,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'})],
[('no risk factors',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'bedrest',
'mental': 'oriented'},
{'score': 0, 'risk': 'LOW'}),
('fall exactly 90 days ago',
{'last_fall_days': 90,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 25, 'risk': 'MODERATE'}),
('fall a year ago',
{'last_fall_days': 302,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 20, 'risk': 'LOW'}),
('furniture walking',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'furniture',
'iv': True,
'gait': 'weak',
'mental': 'oriented'},
{'score': 60, 'risk': 'HIGH'}),
('walker user',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'walker',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 30, 'risk': 'MODERATE'}),
('weak gait',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'cane',
'iv': True,
'gait': 'weak',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'}),
('impaired gait',
{'last_fall_days': 20,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'impaired',
'mental': 'oriented'},
{'score': 60, 'risk': 'HIGH'}),
('score exactly 40',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'walker',
'iv': False,
'gait': 'weak',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('overestimates own ability',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'overestimates'},
{'score': 50, 'risk': 'HIGH'}),
('score exactly 25',
{'last_fall_days': 32,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 25, 'risk': 'MODERATE'}),
('score exactly 45',
{'last_fall_days': 7,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'})],
[('no risk factors',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'immobile',
'mental': 'oriented'},
{'score': 0, 'risk': 'LOW'}),
('fall exactly 90 days ago',
{'last_fall_days': 90,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('fall a year ago',
{'last_fall_days': 303,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 20, 'risk': 'LOW'}),
('furniture walking',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'furniture',
'iv': False,
'gait': 'weak',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('walker user',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'walker',
'iv': False,
'gait': 'normal',
'mental': 'forgets'},
{'score': 45, 'risk': 'HIGH'}),
('weak gait',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'cane',
'iv': True,
'gait': 'weak',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'}),
('impaired gait',
{'last_fall_days': 30,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'impaired',
'mental': 'oriented'},
{'score': 60, 'risk': 'HIGH'}),
('score exactly 40',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'crutches',
'iv': False,
'gait': 'weak',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('overestimates own ability',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'overestimates'},
{'score': 30, 'risk': 'MODERATE'}),
('score exactly 25',
{'last_fall_days': 33,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 25, 'risk': 'MODERATE'}),
('score exactly 45',
{'last_fall_days': 8,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'})],
[('no risk factors',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 0, 'risk': 'LOW'}),
('fall exactly 90 days ago',
{'last_fall_days': 90,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 25, 'risk': 'MODERATE'}),
('fall a year ago',
{'last_fall_days': 304,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 20, 'risk': 'LOW'}),
('furniture walking',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'furniture',
'iv': True,
'gait': 'weak',
'mental': 'oriented'},
{'score': 60, 'risk': 'HIGH'}),
('walker user',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'walker',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 30, 'risk': 'MODERATE'}),
('weak gait',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'cane',
'iv': True,
'gait': 'weak',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'}),
('impaired gait',
{'last_fall_days': 40,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'impaired',
'mental': 'oriented'},
{'score': 60, 'risk': 'HIGH'}),
('score exactly 40',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'cane',
'iv': False,
'gait': 'weak',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('overestimates own ability',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'overestimates'},
{'score': 50, 'risk': 'HIGH'}),
('score exactly 25',
{'last_fall_days': 34,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 25, 'risk': 'MODERATE'}),
('score exactly 45',
{'last_fall_days': 9,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'})],
[('no risk factors',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'bedrest',
'mental': 'oriented'},
{'score': 0, 'risk': 'LOW'}),
('fall exactly 90 days ago',
{'last_fall_days': 90,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('fall a year ago',
{'last_fall_days': 305,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 20, 'risk': 'LOW'}),
('furniture walking',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'furniture',
'iv': False,
'gait': 'weak',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('walker user',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'walker',
'iv': False,
'gait': 'normal',
'mental': 'forgets'},
{'score': 45, 'risk': 'HIGH'}),
('weak gait',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'cane',
'iv': True,
'gait': 'weak',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'}),
('impaired gait',
{'last_fall_days': 50,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'impaired',
'mental': 'oriented'},
{'score': 60, 'risk': 'HIGH'}),
('score exactly 40',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'walker',
'iv': False,
'gait': 'weak',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('overestimates own ability',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'overestimates'},
{'score': 30, 'risk': 'MODERATE'}),
('score exactly 25',
{'last_fall_days': 35,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 25, 'risk': 'MODERATE'}),
('score exactly 45',
{'last_fall_days': 10,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'})]]
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 |
|---|---|---|---|
| no risk factors | {'risk': 'LOW', 'score': 0} | {'risk': 'LOW', 'score': 0} | Passed |
| fall exactly 90 days ago | {'risk': 'MODERATE', 'score': 40} | {'risk': 'MODERATE', 'score': 40} | Passed |
| fall a year ago | {'risk': 'LOW', 'score': 20} | {'risk': 'LOW', 'score': 20} | Passed |
| furniture walking | {'risk': 'MODERATE', 'score': 25} | {'risk': 'MODERATE', 'score': 40} | Failed |
| walker user | {'risk': 'HIGH', 'score': 45} | {'risk': 'HIGH', 'score': 45} | Passed |
| weak gait | {'risk': 'HIGH', 'score': 45} | {'risk': 'HIGH', 'score': 45} | Passed |
| impaired gait | {'risk': 'HIGH', 'score': 60} | {'risk': 'HIGH', 'score': 60} | Passed |
| score exactly 40 | {'risk': 'MODERATE', 'score': 40} | {'risk': 'MODERATE', 'score': 40} | Passed |
| overestimates own ability | {'risk': 'MODERATE', 'score': 30} | {'risk': 'MODERATE', 'score': 30} | Passed |
| score exactly 25 | {'risk': 'MODERATE', 'score': 25} | {'risk': 'MODERATE', 'score': 25} | Passed |
| score exactly 45 | {'risk': 'HIGH', 'score': 45} | {'risk': 'HIGH', 'score': 45} | Passed |
SHA-256 / 513e6f6746d334a67e489e8d4a0f56c176d08cf3284e327f0487267ec9a7d172
2 / The unsuccessful fix
Exit 1"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(x):
d = x['last_fall_days']
fell = d is not None and d <= 90
s = 25 if fell else 0
s += 15 if x['secondary_dx'] else 0
aid = x['aid']
s += 30 if aid == 'furniture' else 15 if aid in ('crutches', 'cane') else 0
s += 20 if x['iv'] else 0
g = x['gait']
s += 20 if g == 'impaired' else 10 if g == 'weak' else 0
s += 15 if x['mental'] in ('forgets', 'overestimates') else 0
risk = 'HIGH' if s >= 45 else 'MODERATE' if s >= 25 else 'LOW'
return {'score': s, 'risk': risk}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[('no risk factors',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 0, 'risk': 'LOW'}),
('fall exactly 90 days ago',
{'last_fall_days': 90,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('fall a year ago',
{'last_fall_days': 301,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 20, 'risk': 'LOW'}),
('furniture walking',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'furniture',
'iv': False,
'gait': 'weak',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('walker user',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'walker',
'iv': False,
'gait': 'normal',
'mental': 'forgets'},
{'score': 45, 'risk': 'HIGH'}),
('weak gait',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'cane',
'iv': True,
'gait': 'weak',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'}),
('impaired gait',
{'last_fall_days': 10,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'impaired',
'mental': 'oriented'},
{'score': 60, 'risk': 'HIGH'}),
('score exactly 40',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'cane',
'iv': False,
'gait': 'weak',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('overestimates own ability',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'overestimates'},
{'score': 30, 'risk': 'MODERATE'}),
('score exactly 25',
{'last_fall_days': 31,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 25, 'risk': 'MODERATE'}),
('score exactly 45',
{'last_fall_days': 6,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'})],
[('no risk factors',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'bedrest',
'mental': 'oriented'},
{'score': 0, 'risk': 'LOW'}),
('fall exactly 90 days ago',
{'last_fall_days': 90,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 25, 'risk': 'MODERATE'}),
('fall a year ago',
{'last_fall_days': 302,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 20, 'risk': 'LOW'}),
('furniture walking',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'furniture',
'iv': True,
'gait': 'weak',
'mental': 'oriented'},
{'score': 60, 'risk': 'HIGH'}),
('walker user',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'walker',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 30, 'risk': 'MODERATE'}),
('weak gait',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'cane',
'iv': True,
'gait': 'weak',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'}),
('impaired gait',
{'last_fall_days': 20,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'impaired',
'mental': 'oriented'},
{'score': 60, 'risk': 'HIGH'}),
('score exactly 40',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'walker',
'iv': False,
'gait': 'weak',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('overestimates own ability',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'overestimates'},
{'score': 50, 'risk': 'HIGH'}),
('score exactly 25',
{'last_fall_days': 32,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 25, 'risk': 'MODERATE'}),
('score exactly 45',
{'last_fall_days': 7,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'})],
[('no risk factors',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'immobile',
'mental': 'oriented'},
{'score': 0, 'risk': 'LOW'}),
('fall exactly 90 days ago',
{'last_fall_days': 90,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('fall a year ago',
{'last_fall_days': 303,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 20, 'risk': 'LOW'}),
('furniture walking',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'furniture',
'iv': False,
'gait': 'weak',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('walker user',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'walker',
'iv': False,
'gait': 'normal',
'mental': 'forgets'},
{'score': 45, 'risk': 'HIGH'}),
('weak gait',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'cane',
'iv': True,
'gait': 'weak',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'}),
('impaired gait',
{'last_fall_days': 30,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'impaired',
'mental': 'oriented'},
{'score': 60, 'risk': 'HIGH'}),
('score exactly 40',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'crutches',
'iv': False,
'gait': 'weak',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('overestimates own ability',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'overestimates'},
{'score': 30, 'risk': 'MODERATE'}),
('score exactly 25',
{'last_fall_days': 33,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 25, 'risk': 'MODERATE'}),
('score exactly 45',
{'last_fall_days': 8,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'})],
[('no risk factors',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 0, 'risk': 'LOW'}),
('fall exactly 90 days ago',
{'last_fall_days': 90,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 25, 'risk': 'MODERATE'}),
('fall a year ago',
{'last_fall_days': 304,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 20, 'risk': 'LOW'}),
('furniture walking',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'furniture',
'iv': True,
'gait': 'weak',
'mental': 'oriented'},
{'score': 60, 'risk': 'HIGH'}),
('walker user',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'walker',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 30, 'risk': 'MODERATE'}),
('weak gait',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'cane',
'iv': True,
'gait': 'weak',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'}),
('impaired gait',
{'last_fall_days': 40,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'impaired',
'mental': 'oriented'},
{'score': 60, 'risk': 'HIGH'}),
('score exactly 40',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'cane',
'iv': False,
'gait': 'weak',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('overestimates own ability',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'overestimates'},
{'score': 50, 'risk': 'HIGH'}),
('score exactly 25',
{'last_fall_days': 34,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 25, 'risk': 'MODERATE'}),
('score exactly 45',
{'last_fall_days': 9,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'})],
[('no risk factors',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'bedrest',
'mental': 'oriented'},
{'score': 0, 'risk': 'LOW'}),
('fall exactly 90 days ago',
{'last_fall_days': 90,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('fall a year ago',
{'last_fall_days': 305,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 20, 'risk': 'LOW'}),
('furniture walking',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'furniture',
'iv': False,
'gait': 'weak',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('walker user',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'walker',
'iv': False,
'gait': 'normal',
'mental': 'forgets'},
{'score': 45, 'risk': 'HIGH'}),
('weak gait',
{'last_fall_days': None,
'secondary_dx': False,
'aid': 'cane',
'iv': True,
'gait': 'weak',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'}),
('impaired gait',
{'last_fall_days': 50,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'impaired',
'mental': 'oriented'},
{'score': 60, 'risk': 'HIGH'}),
('score exactly 40',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'walker',
'iv': False,
'gait': 'weak',
'mental': 'oriented'},
{'score': 40, 'risk': 'MODERATE'}),
('overestimates own ability',
{'last_fall_days': None,
'secondary_dx': True,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'overestimates'},
{'score': 30, 'risk': 'MODERATE'}),
('score exactly 25',
{'last_fall_days': 35,
'secondary_dx': False,
'aid': 'none',
'iv': False,
'gait': 'normal',
'mental': 'oriented'},
{'score': 25, 'risk': 'MODERATE'}),
('score exactly 45',
{'last_fall_days': 10,
'secondary_dx': False,
'aid': 'none',
'iv': True,
'gait': 'normal',
'mental': 'oriented'},
{'score': 45, 'risk': 'HIGH'})]]
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 |
|---|---|---|---|
| no risk factors | {'risk': 'LOW', 'score': 0} | {'risk': 'LOW', 'score': 0} | Passed |
| fall exactly 90 days ago | {'risk': 'MODERATE', 'score': 40} | {'risk': 'MODERATE', 'score': 40} | Passed |
| fall a year ago | {'risk': 'LOW', 'score': 20} | {'risk': 'LOW', 'score': 20} | Passed |
| furniture walking | {'risk': 'MODERATE', 'score': 40} | {'risk': 'MODERATE', 'score': 40} | Passed |
| walker user | {'risk': 'MODERATE', 'score': 30} | {'risk': 'HIGH', 'score': 45} | Failed |
| weak gait | {'risk': 'HIGH', 'score': 45} | {'risk': 'HIGH', 'score': 45} | Passed |
| impaired gait | {'risk': 'HIGH', 'score': 60} | {'risk': 'HIGH', 'score': 60} | Passed |
| score exactly 40 | {'risk': 'MODERATE', 'score': 40} | {'risk': 'MODERATE', 'score': 40} | Passed |
| overestimates own ability | {'risk': 'MODERATE', 'score': 30} | {'risk': 'MODERATE', 'score': 30} | Passed |
| score exactly 25 | {'risk': 'MODERATE', 'score': 25} | {'risk': 'MODERATE', 'score': 25} | Passed |
| score exactly 45 | {'risk': 'HIGH', 'score': 45} | {'risk': 'HIGH', 'score': 45} | Passed |
SHA-256 / 907ccc4034587d94e343858d70ed4e1c60bf900abeedcf05ea3055c32ca32c57
HELD IN THE MEMBER ARCHIVE
The verified repair and its recorded checks are member-only.
This mechanism has 11 recorded checks per implementation. The open-access tier publishes the failure and the unsuccessful fix; the repaired source that passes every check, and the observations that prove it, are available to members.
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Sign in to the archive ↗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 2026-09-29T14:47:27.891132+00:00.
Case digest / 021021a43da2ae4f3d3f53e8f1dce247c8141c691310e4191d6dd8be7326614e