30-day mortality in patients after hip fracture surgery: A comparison of the Charlson Comorbidity Index score and ASA score used in two prediction models

Objective: To compare the Charlson Comorbidity Index (CCI) and American Society of Anesthesiologists (ASA) Physical Status Classification used in two prediction models for 30-day mortality after hip fracture surgery.Study Design Setting: Data from 3651 patients (mean age: 83 years) a Norwegian University Hospital were retrospectively obtained randomly divided into cohorts: model cohort (n = 1825) to develop with CCI ASA as main predictors, validation 1826) assess predictive ability both models. A receiver operating characteristic (ROC) curve determined best predict mortality.Results: Area under ROC at 30 days was 0.726 (p 0.988) CCI- ASA-model. The chosen cut-off-points on ASA-model corresponded similar sensitivities 0.657 specificities 0.680 0.679, respectively. Hence, each predicts correctly 66% 96) mortalities 68% 1132 n 1131) survivals. 23% 33) predicted by neither model.Conclusion: had equal fracture. Considering effort involved calculating score, score may be preferred tool