Prognostic information in administrative co-morbidity data following coronary artery bypass grafting

Objectives The aim of this study was to evaluate the prognostic information obtainable from administrative data with respect to 30 day mortality following coronary artery bypass grafting (CABG) and to compare it with the European System for Cardiac Operative Risk Evaluation (EuroSCORE) recorded in a clinical database Methods We used a co morbidity index calculated from administrative data in the Danish National Patient Register by means of all admissions 1 year prior to CABG In addition, each CABG was categorised as being isolated or not, and acute or not The prognostic power of the co morbidity index was compared to that achieved using EuroSCORE from a clinical database comprising information on all patients treated with CABG in Denmark The outcome was all cause mortality within 30 days after CABG and the prognostic power was evaluated using logistic regression analyses Results We identified 20 078 patients treated with CABG from 2000 to 2007 with a complete registration of the total additive EuroSCORE in the clinical database The co morbidity index carried significant prognostic information regarding 30 day mortality (c statistic 0 81) The prognostic power of the co morbidity index was equal to that of the EuroSCORE (c statistic 0 79) Conclusions A tandard co morbidity index based on administrative data as well as on clinical data has proven equally useful for prediction of mortality amongst CABG patients (C) 2010 European Association for Cardio Thoracic Surgery Published by Elsevier B V All rights reserved