Abstract W MP63: National Trends in Hospitalization Rates for Non-Hemorrhagic Cerebrovascular Disease in the United States among those 15 years and older: 1999 - 2010
Background: Non-hemorrhagic cerebrovascular disease (NH-CVD) is one of the leading causes of hospitalization in the United States (US). We describe the trends in NH-CVD hospitalizations in the US over a twelve-year period.
Methods: We abstracted and analyzed data for NH-CVD hospitalizations, from 1999 to 2010, from the National Hospital Discharge Survey - a national probability sample of hospitalizations at US non-federal short-stay hospitals. NH-CVD hospitalizations were defined as hospitalizations whose principal diagnoses were coded using the International Classification of Diseases, 9th Revision, Clinical Modification codes 433-438. NH-CVD hospitalization rates were calculated for those 15 years and older, as well as among demographic sub-groups defined by age, race, gender, and geographical region. A multivariate logistic regression was modeled, with NH-CVD hospitalization as the outcome and time period as the main predictor, while controlling for age, gender, race, region, and comorbidities (diabetes, hypertension, atrial fibrillation, and dyslipidemia). We applied survey weights correcting for the sample design and non-response, in obtaining the population-based rates, odds ratio (OR), and confidence intervals (CI).
Results: There were 9.8 million NH-CVD hospitalizations among those 15 years and older, from 1999 to 2010. NH-CVD hospitalization rates decreased by 26% from 39 per 10,000 (95% CI: 38, 41) in 1999, to 29 per 10,000 (95% CI: 28, 31) in 2007, and then increased by 24% to 36 per 10,000 (95% CI: 34, 38) in 2010. A similar pattern, with nadirs in 2007, was generally seen across all demographic sub-groups. On multivariate analysis, relative to the 1999-2001 triennium, the lowest odds of NH-CVD hospitalization were seen during 2005-2007 (OR 0.79; 95% CI: 0.76, 0.83).
Conclusion: NH-CVD hospitalization rates in the US are increasing after an initial downward trend. Factors driving this trend are unclear, and it remains to be seen if it will be sustained. The current trend has great implications for healthcare resource utilization in a system already burdened by an aging population. This trend requires monitoring and warrants further research to identify its contributing causes.
Author Disclosures: O. Akinboro: None. O. Olorunfemi: None. D. Pomerantz: None. S. Wasserman: None. P. Basak: None. S. Jesmajian: None.
- © 2015 by American Heart Association, Inc.