Evaluation of socioeconomic and healthcare disparities on same admission cholecystectomy after endoscopic retrograde cholangiopancreatography among patients with acute gallstone pancreatitis

Background: Despite literature and guidelines recommending same admission cholecystectomy (CCY) after endoscopic retrograde cholangiopancreatography (ERCP) for patients with acute gallstone pancreatitis, clinical practice remains variable. The aim of this study was to investigate the role of clinical and socio-demographic factors in the management of acute gallstone pancreatitis. Methods: Patients with acute gallstone pancreatitis who underwent ERCP during hospitalization were reviewed from the U.S. Nationwide Inpatient Sample database between 2008 and 2014. Patients were classified by treatment strategy: ERCP + same admission CCY (ERCP + CCY) versus ERCP alone. Measured variables including age, race/ethnicity, Charlson Comorbidity Index (CCI), hospital type/region, insurance payer, household income, length of hospital stay (LOS), hospitalization cost, and in-hospital mortality were compared between cohorts using χ² and ANOVA. Multivariable logistic regression was performed to identify specific predictors of same admission CCY. Results: A total of 205,012 patients (ERCP + CCY: n = 118,318 versus ERCP alone: n = 86,694) were analyzed. A majority (53.4%) of patients that did not receive same admission CCY were at urban-teaching hospitals. LOS was longer with higher associated costs for patients with same admission CCY [(6.8 ± 5.6 versus 6.4 ± 6.5 days; P < 0.001) and ($69,135 ± 65,913 versus $52,739 ± 66,681; P < 0.001)]. Mortality was decreased significantly for patients who underwent ERCP + CCY versus ERCP alone (0.4% vs 1.1%; P < 0.001). Multivariable regression demonstrated female gender, Black race, higher CCI, Medicare payer status, urban-teaching hospital location, and household income decreased the odds of undergoing same admission CCY + ERCP (all P < 0.001). Conclusion: Based upon this analysis, multiple socioeconomic and healthcare-related disparities influenced the surgical management of acute gallstone pancreatitis. Further studies to investigate these disparities are indicated.