Objectives: Hospitalized patients with acute and chronic pancreatitis (AP and CP) are prone to frequent readmissions to different hospitals. The rate of care fragmentation and its impact on important outcomes are unknown. The aims of this study were to evaluate the rate and predictors of care fragmentation in patients hospitalized with AP and CP using a nationally representative sample, and to analyze the impact of care fragmentation on mortality, cost, and hospital readmissions.
Methods: We identified all adult hospitalizations with a primary diagnosis of AP or CP in the 2010-2014 National Readmissions Database, which captures statewide readmissions. We calculated 30- and 90-day readmission and care fragmentation rates. Readmission to a nonindex hospital was considered care fragmentation. Logistic regression was used to determine hospital and patient factors independently associated with 30-day care fragmentation. Patients readmitted within 30 days were followed for 60 days postdischarge from the first readmission. Mortality during the first readmission, hospitalization costs, and rates of 60-day readmission were compared between those with and without care fragmentation.
Results: There were 479,427 admissions with AP and 25,513 with CP. The rates of 30- and 90-day readmissions were 13.5% and 22.9% for AP and 26.9% and 44.7%% for CP. The rates of 30- and 90-day care fragmentation were 28% and 32% for AP and 33% and 38% for CP. Younger age (younger than 45 y), male patients, length of stay <5 days, ≥4 Elixhauser comorbidities, and self-pay or Medicaid insurance were associated with increased risk of 30-day care fragmentation. Large hospital size, routine discharge, and metropolitan location were associated with lower risk. Patients who had the first readmission to a nonindex hospital had a higher mortality (2% vs 1.6%, P = 0.005), length of stay (6.5 vs 5.6 days, P < 0.0001), mean hospitalization cost ($16,731 vs $13,368, P < 0.0001), and 60-day readmission (48.4% vs 42.9%) compared with those readmitted to the index hospital.
Conclusions: In patients with AP and CP, one-third of 90-day readmissions occur at a nonindex hospital. Care fragmentation is associated with increased mortality, readmissions, and cost of care.