Abstract 18244: Implication of Obesity on Length of Stay and Cost in Atrial Fibrillation Patients- An Objective Evidence
Background: Obesity is considered to be an important co-morbidity in patients with atrial fibrillation (AF). However, its direct implication in terms of cost and length of stay is missing.
METHODS: We queried the Healthcare Cost and Utilization Project’s Nationwide Inpatient Sample (NIS) between 2000 and 2010 using the ICD9-CM code of 427.31 for atrial fibrillation as a primary discharge diagnosis and 278.01 for obesity as a secondary diagnosis. Participants with >18 years of age were only included. The NIS represents 20% of all hospitals in the US. All analyses were performed using the designated weighting specified to the NIS data base to represent national trends. We compared baseline characteristics, length of stay and total cost in obese and non-obese group.
RESULTS: We studied 4092578 patients admitted with primary diagnosis of AF. Obese population was younger, had more diabetes and hypertension. Obese population had more private insurance including HMO and fewer medicares and Medicaid insurance. They were more likely to have invasive cardiac work-up including percutaneous cardiac interventions (PCI). Compare to non-obese population, obese patients had a longer length of stay (4.07 vs. 3.59, p<0.0001) mainly driven by length of stay >2 days (61.6% vs. 52%). Their adjusted total hospitalization cost was also higher as compared to non-obese population ($ 25632 vs. $ 21957, p<0.0001).
CONCLUSION: This is one of the largest studies to evaluate the implications of obesity on health care resource utilization in patients admitted with atrial fibrillation. Length of stay and cost were higher in obese population as compared to non-obese population. Considering the fact that both obesity and atrial fibrillation are in epidemic proportion right now, financial implication can be huge.
- © 2013 by American Heart Association, Inc.