{"abstract":"A score of 1.5 is displayed as 1.","category":"Clinical triage scoring","checks":10,"contract":"Input {dvt_signs, pe_most_likely, hr, immobile_days, surgery_weeks_ago (or null), prior_vte, hemoptysis, malignancy, age, spo2, estrogen}. Toy points: DVT signs 3, alternative less likely 3, hr > 100 1.5, immobilisation >= 3 days OR surgery within 4 weeks 1.5 (counted once), prior VTE 1.5, haemoptysis 1, malignancy 1. Score > 4 is LIKELY (next IMAGING). UNLIKELY patients are RULED_OUT when age < 50, hr < 100, spo2 >= 95 and none of haemoptysis, estrogen, prior VTE or surgery within 4 weeks; otherwise next D_DIMER. Return {score, category, next}.","contract_signature":"x","evaluation_group":"w2-triage-embolism-pretest","failed_approach":"Rounding to the nearest integer still hides half points.","family":"w2-triage-embolism-pretest-half-point-score-report","id":"FA-64476","implementations":{"attempt":{"sha256":"632efb513dc9be44a39080fd764c245898ba5e260a636aa52f71b97b56027f9f","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport math\nfrom fractions import Fraction\nN = 1\nobservations = []\ndef solve(x):\n    h = 0\n    h += 6 if x['dvt_signs'] else 0\n    h += 6 if x['pe_most_likely'] else 0\n    h += 3 if x['hr'] > 100 else 0\n    h += 3 if x['immobile_days'] >= 3 or (x['surgery_weeks_ago'] is not None and x['surgery_weeks_ago'] <= 4) else 0\n    h += 3 if x['prior_vte'] else 0\n    h += 2 if x['hemoptysis'] else 0\n    h += 2 if x['malignancy'] else 0\n    likely = h > 8\n    recent_surg = x['surgery_weeks_ago'] is not None and x['surgery_weeks_ago'] <= 4\n    if likely:\n        nxt = 'IMAGING'\n    elif x['age'] < 50 and x['hr'] < 100 and x['spo2'] >= 95 and not (x['hemoptysis'] or x['estrogen'] or x['prior_vte'] or recent_surg):\n        nxt = 'RULED_OUT'\n    else:\n        nxt = 'D_DIMER'\n    return {'score': round(h / 2), 'category': 'LIKELY' if likely else 'UNLIKELY', 'next': nxt}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('low risk young patient',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 26,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('immobilised after surgery counted once',\n   {'dvt_signs': True,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 4,\n    'surgery_weeks_ago': 2,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('surgery on the day counts',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 0,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.5 is likely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 31,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.0 unlikely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': True,\n    'age': 61,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('half point score reported',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 102,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 55,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('surgery exactly 4 weeks ago excludes rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 4,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 31,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('remote surgery allows rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 6,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 35,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('estrogen use blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 29,\n    'spo2': 98,\n    'estrogen': True},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('prior VTE blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 41,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'})],\n [('low risk young patient',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 27,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('immobilised after surgery counted once',\n   {'dvt_signs': True,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 5,\n    'surgery_weeks_ago': 2,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('surgery on the day counts',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 0,\n    'prior_vte': False,\n    'hemoptysis': True,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 5.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.5 is likely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 32,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.0 unlikely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': True,\n    'age': 62,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('half point score reported',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 103,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 55,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('surgery exactly 4 weeks ago excludes rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 4,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 32,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('remote surgery allows rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 7,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 35,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('estrogen use blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 30,\n    'spo2': 98,\n    'estrogen': True},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('prior VTE blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 42,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'})],\n [('low risk young patient',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 28,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('immobilised after surgery counted once',\n   {'dvt_signs': True,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 6,\n    'surgery_weeks_ago': 2,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('surgery on the day counts',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 0,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.5 is likely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 33,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.0 unlikely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': True,\n    'age': 63,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('half point score reported',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 104,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 55,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('surgery exactly 4 weeks ago excludes rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 4,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 33,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('remote surgery allows rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 8,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 35,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('estrogen use blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 31,\n    'spo2': 98,\n    'estrogen': True},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('prior VTE blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 43,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'})],\n [('low risk young patient',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 29,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('immobilised after surgery counted once',\n   {'dvt_signs': True,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 7,\n    'surgery_weeks_ago': 2,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('surgery on the day counts',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 0,\n    'prior_vte': False,\n    'hemoptysis': True,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 5.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.5 is likely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 34,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.0 unlikely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': True,\n    'age': 64,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('half point score reported',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 105,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 55,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('surgery exactly 4 weeks ago excludes rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 4,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 34,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('remote surgery allows rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 9,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 35,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('estrogen use blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 32,\n    'spo2': 98,\n    'estrogen': True},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('prior VTE blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 44,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'})],\n [('low risk young patient',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 30,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('immobilised after surgery counted once',\n   {'dvt_signs': True,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 8,\n    'surgery_weeks_ago': 2,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('surgery on the day counts',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 0,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.5 is likely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 35,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.0 unlikely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': True,\n    'age': 65,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('half point score reported',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 106,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 55,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('surgery exactly 4 weeks ago excludes rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 4,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 35,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('remote surgery allows rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 10,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 35,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('estrogen use blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 33,\n    'spo2': 98,\n    'estrogen': True},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('prior VTE blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 45,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'})]]\nfor label, args, expected in fixtures[N-1]:\n    check(label, solve(args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"ca7b615248cf407837ca6188014cc9778f6fcbaf6caf7f586f4d175e3ebb071d","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport math\nfrom fractions import Fraction\nN = 1\nobservations = []\ndef solve(x):\n    h = 0\n    h += 6 if x['dvt_signs'] else 0\n    h += 6 if x['pe_most_likely'] else 0\n    h += 3 if x['hr'] > 100 else 0\n    h += 3 if x['immobile_days'] >= 3 or (x['surgery_weeks_ago'] is not None and x['surgery_weeks_ago'] <= 4) else 0\n    h += 3 if x['prior_vte'] else 0\n    h += 2 if x['hemoptysis'] else 0\n    h += 2 if x['malignancy'] else 0\n    likely = h > 8\n    recent_surg = x['surgery_weeks_ago'] is not None and x['surgery_weeks_ago'] <= 4\n    if likely:\n        nxt = 'IMAGING'\n    elif x['age'] < 50 and x['hr'] < 100 and x['spo2'] >= 95 and not (x['hemoptysis'] or x['estrogen'] or x['prior_vte'] or recent_surg):\n        nxt = 'RULED_OUT'\n    else:\n        nxt = 'D_DIMER'\n    return {'score': h // 2, 'category': 'LIKELY' if likely else 'UNLIKELY', 'next': nxt}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('low risk young patient',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 26,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('immobilised after surgery counted once',\n   {'dvt_signs': True,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 4,\n    'surgery_weeks_ago': 2,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('surgery on the day counts',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 0,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.5 is likely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 31,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.0 unlikely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': True,\n    'age': 61,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('half point score reported',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 102,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 55,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('surgery exactly 4 weeks ago excludes rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 4,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 31,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('remote surgery allows rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 6,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 35,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('estrogen use blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 29,\n    'spo2': 98,\n    'estrogen': True},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('prior VTE blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 41,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'})],\n [('low risk young patient',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 27,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('immobilised after surgery counted once',\n   {'dvt_signs': True,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 5,\n    'surgery_weeks_ago': 2,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('surgery on the day counts',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 0,\n    'prior_vte': False,\n    'hemoptysis': True,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 5.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.5 is likely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 32,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.0 unlikely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': True,\n    'age': 62,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('half point score reported',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 103,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 55,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('surgery exactly 4 weeks ago excludes rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 4,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 32,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('remote surgery allows rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 7,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 35,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('estrogen use blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 30,\n    'spo2': 98,\n    'estrogen': True},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('prior VTE blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 42,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'})],\n [('low risk young patient',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 28,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('immobilised after surgery counted once',\n   {'dvt_signs': True,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 6,\n    'surgery_weeks_ago': 2,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('surgery on the day counts',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 0,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.5 is likely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 33,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.0 unlikely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': True,\n    'age': 63,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('half point score reported',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 104,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 55,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('surgery exactly 4 weeks ago excludes rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 4,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 33,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('remote surgery allows rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 8,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 35,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('estrogen use blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 31,\n    'spo2': 98,\n    'estrogen': True},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('prior VTE blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 43,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'})],\n [('low risk young patient',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 29,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('immobilised after surgery counted once',\n   {'dvt_signs': True,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 7,\n    'surgery_weeks_ago': 2,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('surgery on the day counts',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 0,\n    'prior_vte': False,\n    'hemoptysis': True,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 5.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.5 is likely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 34,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.0 unlikely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': True,\n    'age': 64,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('half point score reported',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 105,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 55,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('surgery exactly 4 weeks ago excludes rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 4,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 34,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('remote surgery allows rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 9,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 35,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('estrogen use blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 32,\n    'spo2': 98,\n    'estrogen': True},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('prior VTE blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 44,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'})],\n [('low risk young patient',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 30,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('immobilised after surgery counted once',\n   {'dvt_signs': True,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 8,\n    'surgery_weeks_ago': 2,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('surgery on the day counts',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 0,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 40,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.5 is likely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 35,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.5, 'category': 'LIKELY', 'next': 'IMAGING'}),\n  ('score 4.0 unlikely',\n   {'dvt_signs': False,\n    'pe_most_likely': True,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': True,\n    'age': 65,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 4.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('half point score reported',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 106,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 55,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('surgery exactly 4 weeks ago excludes rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 4,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 35,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('remote surgery allows rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': 10,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 35,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'RULED_OUT'}),\n  ('estrogen use blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': False,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 33,\n    'spo2': 98,\n    'estrogen': True},\n   {'score': 0.0, 'category': 'UNLIKELY', 'next': 'D_DIMER'}),\n  ('prior VTE blocks rule-out',\n   {'dvt_signs': False,\n    'pe_most_likely': False,\n    'hr': 80,\n    'immobile_days': 0,\n    'surgery_weeks_ago': None,\n    'prior_vte': True,\n    'hemoptysis': False,\n    'malignancy': False,\n    'age': 45,\n    'spo2': 98,\n    'estrogen': False},\n   {'score': 1.5, 'category': 'UNLIKELY', 'next': 'D_DIMER'})]]\nfor label, args, expected in fixtures[N-1]:\n    check(label, solve(args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":"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.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"w2-triage-embolism-pretest-half-point-score-report","generated_at":"2026-09-29T14:47:24.840054+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Pretest scoring feeds a rule-out gate; half-point arithmetic, the either/or item and exclusion lists are separate defect sites.","root_cause":"Integer division drops the half point when converting from half-point units.","sha256":"0381d52cbad9dac7d787dbe2b2cd6fa345d638283129396fc525ad85e38e66e7","title":"Embolism pretest probability and rule-out pathway: half-point score report · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verified":true,"visibility":"public","verification":{"attempt":{"elapsed_ms":46.19,"exit_code":1,"observations":[{"actual":{"category":"UNLIKELY","next":"RULED_OUT","score":0},"check":"low risk young patient","expected":{"category":"UNLIKELY","next":"RULED_OUT","score":0.0},"passed":true},{"actual":{"category":"LIKELY","next":"IMAGING","score":4},"check":"immobilised after surgery counted once","expected":{"category":"LIKELY","next":"IMAGING","score":4.5},"passed":false},{"actual":{"category":"LIKELY","next":"IMAGING","score":4},"check":"surgery on the day counts","expected":{"category":"LIKELY","next":"IMAGING","score":4.5},"passed":false},{"actual":{"category":"LIKELY","next":"IMAGING","score":4},"check":"score 4.5 is likely","expected":{"category":"LIKELY","next":"IMAGING","score":4.5},"passed":false},{"actual":{"category":"UNLIKELY","next":"D_DIMER","score":4},"check":"score 4.0 unlikely","expected":{"category":"UNLIKELY","next":"D_DIMER","score":4.0},"passed":true},{"actual":{"category":"UNLIKELY","next":"D_DIMER","score":2},"check":"half point score reported","expected":{"category":"UNLIKELY","next":"D_DIMER","score":1.5},"passed":false},{"actual":{"category":"UNLIKELY","next":"D_DIMER","score":2},"check":"surgery exactly 4 weeks ago excludes rule-out","expected":{"category":"UNLIKELY","next":"D_DIMER","score":1.5},"passed":false},{"actual":{"category":"UNLIKELY","next":"RULED_OUT","score":0},"check":"remote surgery allows rule-out","expected":{"category":"UNLIKELY","next":"RULED_OUT","score":0.0},"passed":true},{"actual":{"category":"UNLIKELY","next":"D_DIMER","score":0},"check":"estrogen use blocks rule-out","expected":{"category":"UNLIKELY","next":"D_DIMER","score":0.0},"passed":true},{"actual":{"category":"UNLIKELY","next":"D_DIMER","score":2},"check":"prior VTE blocks rule-out","expected":{"category":"UNLIKELY","next":"D_DIMER","score":1.5},"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"low risk young patient\", \"actual\": {\"score\": 0, \"category\": \"UNLIKELY\", \"next\": \"RULED_OUT\"}, \"expected\": {\"score\": 0.0, \"category\": \"UNLIKELY\", \"next\": \"RULED_OUT\"}, \"passed\": true}, {\"check\": \"immobilised after surgery counted once\", \"actual\": {\"score\": 4, \"category\": \"LIKELY\", \"next\": \"IMAGING\"}, \"expected\": {\"score\": 4.5, \"category\": \"LIKELY\", \"next\": \"IMAGING\"}, \"passed\": false}, {\"check\": \"surgery on the day counts\", \"actual\": {\"score\": 4, \"category\": \"LIKELY\", \"next\": \"IMAGING\"}, \"expected\": {\"score\": 4.5, \"category\": \"LIKELY\", \"next\": \"IMAGING\"}, \"passed\": false}, {\"check\": \"score 4.5 is likely\", \"actual\": {\"score\": 4, \"category\": \"LIKELY\", \"next\": \"IMAGING\"}, \"expected\": {\"score\": 4.5, \"category\": \"LIKELY\", \"next\": \"IMAGING\"}, \"passed\": false}, {\"check\": \"score 4.0 unlikely\", \"actual\": {\"score\": 4, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"expected\": {\"score\": 4.0, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"passed\": true}, {\"check\": \"half point score reported\", \"actual\": {\"score\": 2, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"expected\": {\"score\": 1.5, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"passed\": false}, {\"check\": \"surgery exactly 4 weeks ago excludes rule-out\", \"actual\": {\"score\": 2, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"expected\": {\"score\": 1.5, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"passed\": false}, {\"check\": \"remote surgery allows rule-out\", \"actual\": {\"score\": 0, \"category\": \"UNLIKELY\", \"next\": \"RULED_OUT\"}, \"expected\": {\"score\": 0.0, \"category\": \"UNLIKELY\", \"next\": \"RULED_OUT\"}, \"passed\": true}, {\"check\": \"estrogen use blocks rule-out\", \"actual\": {\"score\": 0, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"expected\": {\"score\": 0.0, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"passed\": true}, {\"check\": \"prior VTE blocks rule-out\", \"actual\": {\"score\": 2, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"expected\": {\"score\": 1.5, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"passed\": false}], \"passed\": false}\n"},"broken":{"elapsed_ms":43.129,"exit_code":1,"observations":[{"actual":{"category":"UNLIKELY","next":"RULED_OUT","score":0},"check":"low risk young patient","expected":{"category":"UNLIKELY","next":"RULED_OUT","score":0.0},"passed":true},{"actual":{"category":"LIKELY","next":"IMAGING","score":4},"check":"immobilised after surgery counted once","expected":{"category":"LIKELY","next":"IMAGING","score":4.5},"passed":false},{"actual":{"category":"LIKELY","next":"IMAGING","score":4},"check":"surgery on the day counts","expected":{"category":"LIKELY","next":"IMAGING","score":4.5},"passed":false},{"actual":{"category":"LIKELY","next":"IMAGING","score":4},"check":"score 4.5 is likely","expected":{"category":"LIKELY","next":"IMAGING","score":4.5},"passed":false},{"actual":{"category":"UNLIKELY","next":"D_DIMER","score":4},"check":"score 4.0 unlikely","expected":{"category":"UNLIKELY","next":"D_DIMER","score":4.0},"passed":true},{"actual":{"category":"UNLIKELY","next":"D_DIMER","score":1},"check":"half point score reported","expected":{"category":"UNLIKELY","next":"D_DIMER","score":1.5},"passed":false},{"actual":{"category":"UNLIKELY","next":"D_DIMER","score":1},"check":"surgery exactly 4 weeks ago excludes rule-out","expected":{"category":"UNLIKELY","next":"D_DIMER","score":1.5},"passed":false},{"actual":{"category":"UNLIKELY","next":"RULED_OUT","score":0},"check":"remote surgery allows rule-out","expected":{"category":"UNLIKELY","next":"RULED_OUT","score":0.0},"passed":true},{"actual":{"category":"UNLIKELY","next":"D_DIMER","score":0},"check":"estrogen use blocks rule-out","expected":{"category":"UNLIKELY","next":"D_DIMER","score":0.0},"passed":true},{"actual":{"category":"UNLIKELY","next":"D_DIMER","score":1},"check":"prior VTE blocks rule-out","expected":{"category":"UNLIKELY","next":"D_DIMER","score":1.5},"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"low risk young patient\", \"actual\": {\"score\": 0, \"category\": \"UNLIKELY\", \"next\": \"RULED_OUT\"}, \"expected\": {\"score\": 0.0, \"category\": \"UNLIKELY\", \"next\": \"RULED_OUT\"}, \"passed\": true}, {\"check\": \"immobilised after surgery counted once\", \"actual\": {\"score\": 4, \"category\": \"LIKELY\", \"next\": \"IMAGING\"}, \"expected\": {\"score\": 4.5, \"category\": \"LIKELY\", \"next\": \"IMAGING\"}, \"passed\": false}, {\"check\": \"surgery on the day counts\", \"actual\": {\"score\": 4, \"category\": \"LIKELY\", \"next\": \"IMAGING\"}, \"expected\": {\"score\": 4.5, \"category\": \"LIKELY\", \"next\": \"IMAGING\"}, \"passed\": false}, {\"check\": \"score 4.5 is likely\", \"actual\": {\"score\": 4, \"category\": \"LIKELY\", \"next\": \"IMAGING\"}, \"expected\": {\"score\": 4.5, \"category\": \"LIKELY\", \"next\": \"IMAGING\"}, \"passed\": false}, {\"check\": \"score 4.0 unlikely\", \"actual\": {\"score\": 4, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"expected\": {\"score\": 4.0, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"passed\": true}, {\"check\": \"half point score reported\", \"actual\": {\"score\": 1, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"expected\": {\"score\": 1.5, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"passed\": false}, {\"check\": \"surgery exactly 4 weeks ago excludes rule-out\", \"actual\": {\"score\": 1, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"expected\": {\"score\": 1.5, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"passed\": false}, {\"check\": \"remote surgery allows rule-out\", \"actual\": {\"score\": 0, \"category\": \"UNLIKELY\", \"next\": \"RULED_OUT\"}, \"expected\": {\"score\": 0.0, \"category\": \"UNLIKELY\", \"next\": \"RULED_OUT\"}, \"passed\": true}, {\"check\": \"estrogen use blocks rule-out\", \"actual\": {\"score\": 0, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"expected\": {\"score\": 0.0, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"passed\": true}, {\"check\": \"prior VTE blocks rule-out\", \"actual\": {\"score\": 1, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"expected\": {\"score\": 1.5, \"category\": \"UNLIKELY\", \"next\": \"D_DIMER\"}, \"passed\": false}], \"passed\": false}\n"}},"member_only":{"stages":["fixed"],"fields":["implementations.fixed","verification.fixed","harness","repair"],"note":"The verified repair, its recorded checks, the repair description, and the scoring harness are available to members."}}