Open AccessRecalibration and External Validation of the Risk Analysis Index
Author(s) -
Shipra Arya,
Patrick Varley,
Ada O. Youk,
Jeffrey D. Borrebach,
Sebastian D. Perez,
Nader N. Massarweh,
Jason M. Johanning,
Daniel E. Hall
Publication year - 2019
Publication title -
annals of surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.153
H-Index - 309
eISSN - 1528-1140
pISSN - 0003-4932
DOI - 10.1097/sla.0000000000003276
Subject(s) - medicine , veterans affairs , cohort , prospective cohort study , predictive value , surgery , cohort study , emergency medicine
The Risk Analysis Index (RAI) predicts 30-, 180-, and 365-day mortality based on variables constitutive of frailty. Initially validated, in a single-center Veteran hospital, we sought to improve model performance by recalibrating the RAI in a large, veteran surgical registry, and to externally validate it in both a national surgical registry and a cohort of surgical patients for whom RAI was measured prospectively before surgery.