216321 Sleep Duration and Risk of Obesity: Analysis of the National Health Interview Survey

Sunday, November 7, 2010

Omar Abo Al Haija'a, MD , Brooklyn Health Disparities Center, SUNY Downstate Medical Center, Brooklyn, NY
Girardin Jean-Louis, PhD , Associate Professor of Medicine and Neurology, SUNY Downstate Medical Center, Brooklyn, NY
Ferdinand Zizi, MBA , Clinical Instructor of Medicine and Neurology, Program Director, Brooklyn Health Disparities Center, SUNY Downstate Medical Center, Brooklyn, NY
Kaushal Kalra, MD , Brooklyn Health Disparities Center, SUNY Downstate Medical Center, Brooklyn, NY
Uzma Anwar, MD , Brooklyn Health Disparities Center, SUNY Downstate Medical Center, Brooklyn, NY
Margaret Donat, MD , Department of Family Practice, SUNY Downstate Medical Center, Brooklyn, NY
Clinton Brown, MD , Department of Medicine, SUNY Downstate Medical Center, Brooklyn, NY
Introduction: This study assessed whether the short sleep-obesity link differentially affects black and white Americans.

Method: Analysis was based on data obtained from 29,818 Americans (age range: 18-85 years) who participated in the 2005 National Health Interview Survey, a cross-sectional household interview survey, using a multistage area probability design. Probability samples of the civilian population of all 50 states and DC were obtained. During face-to-face interviews conducted by trained interviewers from the U.S. Census Bureau, respondents provided socio-demographic data and information about physician-diagnosed chronic conditions (e.g., hypertension, heart disease, diabetes, and arthritis). Subjective and anthropometric data including mood, habitual sleep duration and height/weight were also collected.

Results: Compared with whites, blacks were less likely to report sleeping 7 hours [23% vs. 30%, p<0.0001], with characteristically greater prevalence of short sleep (≤5 hrs) [12% vs. 8%, p<0.0001]. Blacks had a greater prevalence of obesity (BMI ≥30kg/m2) than did whites [52% vs. 38%, p<0.0001]. Short sleep was associated with obesity among both blacks and whites [OR=2.22, 95% CI: 1.68-2.95, p<0.0001; and OR= 1.82, 95% CI: 1.60-2.07, p<0.0001, respectively]. Multivariate-adjusted ORs for blacks and whites were 1.78 [95% CI: 1.30-2.45, p<0.0001] and 1.43 [95% CI: 1.24-1.66, p<0.0001], respectively. Demographic and medical risk factors were adjusted.

Discussion: Race significantly influences the risk of obesity associated with short sleep duration. An excess of 35% of blacks showed greater obesity risk associated with short sleep. Further research is needed to examine the mediators of excess risk among Black population.

Learning Areas:
Clinical medicine applied in public health
Diversity and culture
Public health or related research
Social and behavioral sciences

Learning Objectives:
1. Assess whether the link between sleep and obesity differentially affects Black and White Americans. 2. Demonstrate the need of adequate sleep as an obesity preventive tool. 3. Generate interest to investigate how sleep influences obesity.

Keywords: Obesity, Ethnicity

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: Involved in the research and write up of the abstract
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.