Assessing National Trends and Disparities in Ambulatory, Emergency Department, and Inpatient Visits for Inflammatory Bowel Disease in the United States (2005-2016)

Abstract

Background & aims: Patients with inflammatory bowel diseases (IBDs) require repeated health care encounters, although the focus of care differs when patients are seen in ambulatory, emergency department (ED), or inpatient settings. We examined contemporary trends and disparities in IBD-related health care visits.

Methods: We used data from the National Ambulatory Medical Care Survey, the Nationwide Emergency Department Sample, and the National Inpatient Sample to estimate the total number of annual IBD-related visits from 2005 through 2016. We performed logistic regression analyses to test temporal linear trends. Slope and differences in distributions of patient demographics were compared across time and treatment settings.

Results: From 2005 through 2016, approximately 2.2 million IBD-related ambulatory visits (95 CI, 1.9-2.5) occurred annually on average, increasing by 70.3% from the time period of 2005 to 2007 through the time period of 2008 to 2010, and decreasing by 19.8% from the time period of 2011 to 2013 through the time period of 2014 to 2016. An average of 115,934 IBD-related ED visits (95% CI, 113,758-118,111) and 89,111 IBD-related hospital discharges (95% CI, 87,416-90,807) occurred annually. Significant increases in the rate of IBD-related ED visits (3.2 visits/10,000 encounters; P < .0001) and hospital discharges (6.0 discharges/10,000 encounters; P < .0001) were observed from 2005 through 2016. The proportion of patients paying with private insurance decreased from 2005 through 2016, among all care settings. A greater proportion of young patients, patients with Crohn's disease, non-white patients, and patients with Medicare or Medicaid used hospital-based vs ambulatory services.

Conclusions: In an analysis of data from 3 large databases, we found that although IBD-related ambulatory visits stabilized to decreased from 2005 through 2016, rates of ED use and admission to the hospital have continued to increase with changes in patient demographics, over time and among care settings.

Keywords: Crohn’s Disease; Health Care Utilization; NAMCS; NEDS; NIS; Ulcerative Colitis.