Author + information
- Emmanuel Akintoye,
- Alexandros Briasoulis,
- Oluwole Adegbala,
- Muhammad Adil Sheikh,
- Manmohan Singh,
- Abdelrahman Ahmed and
- Diane Levine
Background: We sought to evaluate seasonal variation in hospitalization outcomes including in-patient mortality, cost of hospitalization and length of stay in heart failure patients in the United States.
Methods: This study was conducted using the National Inpatient Sample (NIS) of the Agency for Healthcare Research and Quality (2011-2013). Seasonal variation was classified based on meteorological classification of Northern seasons: spring, summer, fall, and winter. Analysis was conducted via multivariate-adjusted mixed effect model.
Results: An estimated 3 million adults with mean (SD) age of 73 (14) were hospitalized for heart failure in the U.S. from 2011-2013. Overall, mortality rate was 3.1%. Compared to the spring season, there was significantly lower mortality in summer (OR: 0.95 [0.91-0.99], p=0.02) and fall (OR: 0.95 [0.90-0.99], p=0.01) but the highest mortality was in winter (OR: 1.06 [1.02-1.11], p=0.005) (fig 1). Median cost per hospitalization was highest in winter and lowest in summer (fig 2) but there was no difference in median length of stay (median [IQR] length of stay was 4  days for each season)
Conclusions: There is significant seasonal variation in in-patient mortality and cost of hospitalization among patients admitted for heart failure in the United States. Identifying and addressing factors contributing to seasonal variability has the potential to impact health care costs for the treatment of heart failure.
Poster Hall, Hall C
Friday, March 17, 2017, 3:45 p.m.-4:30 p.m.
Session Title: Acute Heart Failure: Evaluating Strategies to Prevent Readmissions
Abstract Category: 13. Heart Failure and Cardiomyopathies: Clinical
Presentation Number: 1163-251
- 2017 American College of Cardiology Foundation