Impact of Area Deprivation Index on Coronary Stent Utilization in a Medicare Nationwide Cohort.

Abstract Area Deprivation Index (ADI) is a marker of neighborhood deprivation. This study investigates utilization of coronary bare-metal stent (BMS) and drug-eluting stent (DES) in Medicare patients across hospitals with varying ADI. Data were abstracted using Diagnosis-Related Group (DRG) codes 249 (BMS without major complications or comorbidities [MCC]), 246, and 247 (DES with and without MCC, respectively) from the 2011–2012 Medicare Provider Utilization and Payment Data Inpatient File, which was linked to American Hospital Association data (to determine bed size, location, ownership, teaching status), and ADI for each hospital zip code was obtained. Hospitals were divided into quintiles using ADI values: Quintile 1 (privileged) to Quintile 5 (deprived). Logistic regression was conducted to determine odds ratios (ORs) for DES utilization across ADI quintiles. There were 313,739 discharges with DRG codes 246 (52,839), 247 (203,928), and 249 (56,972). DES utilization was lower in the deprived quintile, ...