Abstract
Acute lower gastrointestinal bleeding (LGIB) is a common indication for hospitalization potentially requiring urgent intervention, which may not be readily available at weekends and off-hours. The aim of this study was to examine the association between weekend admission for LGIB and mortality, time to colonoscopy, length of stay, and hospital charges. The 2016 U.S. National Inpatient Sample (NIS) dataset was queried for admissions with a primary diagnosis of LGIB. Outcomes for weekend versus weekday admissions were compared using survey-adjusted chi-squared or bivariate correlation. Multivariable regression was then used to compare primary outcomes adjusting for the Elixhauser mortality score (a validated measure of comorbidities), colonoscopy, transfusion, shock, and hospital type. An estimated 124,620 patients were admitted for LGIB in 2016. Comparing weekend with weekday admissions, there was no difference in unadjusted mortality (0.9% vs 1.0%, P= .636). Colonoscopy within the first day (28.6% vs 23.0%, P< .001) and transfusion (34.0% vs 31.5%, P< .001) were more common with weekday admissions; no differences in colonoscopy rate (60.7% vs 60.9%, P= .818), angiography rate (2.7% vs 2.7%, P= .976), mean days to colonoscopy (2.0 vs 2.0, P= .233), or length of stay (4.2 vs 4.1 days, P= .068) were seen. There was no difference in multivariable adjusted mortality rates (odds ratio, 1.11; 95% confidence interval, 0.81-1.54; P= .495) based on the above factors. Early colonoscopy (within the first day) is more common for weekday admissions, but overall outcomes are not affected by weekend admission for LGIB compared with weekday admissions.
Published Version
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