{"slug":"api-magentlab-com-api-calc-grobman-vbac-e6514b","title":"Grobman 2007 first prenatal visit logistic probability of vaginal birth after ce","host":"api.magentlab.com","method":"POST","resource":"https://api.magentlab.com/api/calc/grobman_vbac","category":"other","description":"Grobman 2007 first prenatal visit logistic probability of vaginal birth after cesarean from maternal age, prepregnancy BMI, caller-assigned ethnicity (african_american, hispanic, or other), any prior vaginal delivery, prior VBAC after cesarean, and recurrent cesarean indication. Ethnicity uses the p","price_listed":0.005,"price_asked":0.007,"state":"overcharges","state_label":"Asked 1.4x its listed price for its own example","checks_7d":1,"answered_7d":1,"latency_ms_median":301,"reported_calls_30d":0,"reported_payers_30d":0,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"items":[{"age":30,"bmi_kg_m2":25,"ethnicity":"other","prior_vaginal":false,"prior_vbac":false,"recurrent_indication":false},{"age":30,"bmi_kg_m2":25,"ethnicity":"other","prior_vaginal":false,"prior_vbac":false,"recurrent_indication":false}]},"method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"additionalProperties":false,"properties":{"items":{"items":{"properties":{"age":{"description":"Maternal age in years (integer 12-55). Grobman 2007 coefficient -0.039 per year. 12-55 is a clinical range for TOLAC; the paper does not print that clamp. magent does not take a date of birth.","type":"integer"},"bmi_kg_m2":{"description":"Prepregnancy BMI in kg/m^2 (15-70). Grobman 2007 coefficient -0.060. 15-70 is a clinical range; the paper does not print that clamp. Caller-supplied; magent does not compute BMI from height and weight.","type":"number"},"ethnicity":{"description":"Caller-assigned ethnicity as used in Grobman 2007: african_american, hispanic, or other (mutually exclusive paper terms; other is the reference). magent does not assign race or ethnicity.","enum":["african_american","hispanic","other"],"type":"string"},"prior_vaginal":{"description":"Any prior vaginal delivery as assigned by the caller (Grobman 2007). true scores +0.888. true or false. magent does not read the obstetric history.","type":"boolean"},"prior_vbac":{"description":"VBAC after prior cesarean as assigned by the caller (Grobman 2007). true scores +1.003. true or false. magent does not infer this from prior_vaginal.","type":"boolean"},"recurrent_indication":{"description":"Recurring indication for cesarean as assigned by the caller (Grobman 2007). true scores -0.632. true or false. magent does not read the operative indication.","type":"boolean"}},"required":["age","bmi_kg_m2","ethnicity","prior_vaginal","prior_vbac","recurrent_indication"],"type":"object"},"maxItems":25,"minItems":1,"type":"array"}},"required":["items"],"type":"object"},"headers":{"additionalProperties":{"type":"string"},"type":"object"},"method":{"const":"POST","type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-28","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.007,"price_match":false,"latency_ms":301,"error":null}],"description_full":"Grobman 2007 first prenatal visit logistic probability of vaginal birth after cesarean from maternal age, prepregnancy BMI, caller-assigned ethnicity (african_american, hispanic, or other), any prior vaginal delivery, prior VBAC after cesarean, and recurrent cesarean indication. Ethnicity uses the paper terms; magent does not assign race or ethnicity. Not the 2009/2010 admission model and not Grobman 2021. Not a trial-of-labor order.","last_updated":"2026-09-28T15:19:10.909Z","schemes":["exact"]}