{"uid":"cap_TZkD88QrTTjjuUBjFYoXd","slug":"de-jong-2025-rotterdam-hip-fracture-mortality-prediction-rhmp-30-db7987e9","name":"de Jong 2025 Rotterdam Hip Fracture Mortality Prediction (RHMP-30)","description":"de Jong 2025 Rotterdam Hip Fracture Mortality Prediction-30 Days (RHMP-30) LASSO logit from age, sex (published female coefficient, not race), albumin g/L, dementia, Katz-ADL total 0-6, ASA 4, and nursing-home residence. Returns logit and estimated_mortality_percent from the unrounded logit. Not an operative vs nonoperative order. magent does not assign ASA or Katz.","url":"https://api.magentlab.com/api/calc/rhmp_30","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","required":["age","sex","albumin_g_l","dementia","katz_adl","asa_4","nursing_home"],"properties":{"age":{"type":"integer","description":"Age in years, integer 40-110. de Jong 2025 coefficient +0.0306 per year. magent does not read an identity document."},"sex":{"enum":["female","male"],"type":"string","description":"Sex used as the published de Jong 2025 female coefficient (female = 1, male = 0). Not race. magent does not examine the patient."},"asa_4":{"type":"boolean","description":"true if the caller assigns ASA physical status 4 (de Jong 2025). true scores 1 in the logit; false scores 0. magent does not assign ASA class."},"dementia":{"type":"boolean","description":"true if the caller assigns a history of dementia (de Jong 2025). true scores 1 in the logit; false scores 0. magent does not diagnose dementia."},"katz_adl":{"type":"integer","description":"Katz Index of Independence in Activities of Daily Living total, integer 0-6 (de Jong 2025). 0 = completely dependent; 6 = completely independent. Caller-assigned total; magent does not score bathing, dressing, toileting, transferring, continence, or feeding."},"albumin_g_l":{"type":"number","description":"Admission serum albumin in g/L (10-60). de Jong 2025 Table I uses g/L (typical 30-45). Not g/dL. Caller-supplied; magent does not assay albumin."},"nursing_home":{"type":"boolean","description":"true if the caller assigns residence in a nursing home (de Jong 2025). true scores 1 in the logit; false scores 0. magent does not determine residence."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_8VCaBBnpmB4UBlBhAPZEj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calculates the 30-day mortality probability for hip fracture patients using the de Jong 2025 RHMP-30 LASSO logistic regression model from seven caller-supplied clinical inputs.","exampleAgentPrompt":"Run the de Jong 2025 RHMP-30 hip fracture mortality model for an 82-year-old female with an albumin of 31 g/L, a history of dementia, Katz-ADL score of 2, ASA class 4, and currently living in a nursing home — what is her estimated 30-day mortality?","exampleUseCases":[{"title":"Geriatric hip fracture pre-op risk briefing","prompt":"My patient is a 78-year-old male, albumin 28 g/L, no dementia, Katz-ADL of 4, not ASA 4, lives at home — can you run the RHMP-30 model and tell me his 30-day mortality estimate?"},{"title":"Nursing home resident prognosis after fall","prompt":"An 88-year-old female nursing home resident fell and fractured her hip. She has dementia, albumin of 25 g/L, Katz-ADL of 1, and is classified ASA 4. What does the Rotterdam 30-day hip fracture mortality model predict?"},{"title":"Comparing mortality risk across two patients","prompt":"I have two hip fracture patients. First: 74-year-old male, albumin 38 g/L, no dementia, Katz-ADL 5, not ASA 4, lives at home. Second: 90-year-old female, albumin 22 g/L, dementia, Katz-ADL 1, ASA 4, nursing home. Run the RHMP-30 model for both and compare their 30-day mortality probabilities."}],"resultDescription":"Returns a logit value (raw linear predictor from the de Jong 2025 LASSO model) and an estimated_mortality_percent (probability of 30-day mortality derived from the unrounded logit), allowing downstream clinical decision support without rounding artefacts.","failureModes":["Missing required query parameters (age, sex, albumin_g_l, dementia, katz_adl, asa_4, nursing_home) return a validation error","Age outside integer range 40-110 may be rejected or produce out-of-range extrapolation","Albumin supplied in g/dL instead of g/L will silently produce an incorrect logit (no unit conversion performed)","Katz-ADL outside 0-6 integer range will fail schema validation","Payment failure (x402) if USDC balance is insufficient for the $0.005 call fee","Network timeout or API unavailability returns HTTP 5xx"],"whenToPreferThis":"Use this endpoint when you need a validated, published logistic regression model (de Jong 2025, Rotterdam cohort) for 30-day hip fracture mortality and have all seven required clinical inputs pre-assigned by a clinician. Prefer it over generic frailty scores when the specific RHMP-30 coefficients are required for audit or reproducibility. Do not use it to assign ASA class, Katz-ADL scores, diagnose dementia, or adjudicate operative vs. non-operative management — those determinations must come from the caller.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T01:21:16.720Z","isFirstParty":false}