Abstract P030: Changes in Prevalence of Awareness of Overweight, Desire to Weigh Less and Attempted Weight Loss in Unites States: 1989-1994 to 2005-08
Introduction Prevalence of obesity has increased in United States in the last 30 years. We analyzed changes in prevalence of motivational variables related to weight loss among overweight adults in United States from 1988-94 to 2005-08 using data from the National Health and Nutritional Examination Survey (NHANES).
Methods NHANES cycles represented probability samples of US civilian population. Participants with BMI ≥ 25 kg/m2 were included. Awareness of one’s overweight status, desire to weigh less and attempted weight loss were assessed through interview.SAS 9.3 was used for statistical analysis. Change in prevalence of motivational variables across survey cycles was evaluated using logistic regression with survey year entered as a categorical variable in addition to age, gender, race/ethnicity and BMI. Sample weights that accounted for survey design, non-response and non-coverage were used.
Results Between 1989-1994 and 05-08 prevalence of BMI ≥25 kg/m2 increased from 56.1% to 68.5% (P <0.001). 9766 and 6132 participants from NHANES III and 2005-08 respectively were included in the final analysis. Prevalence of motivational variables stratified by age, gender, ethnicity and BMI category is shown in table 1. Between 1989-94 and 2005-08, awareness of overweight decreased from 77.4% to 74.6% (P <0.0001); desire to weigh less decreased from 82.1% to 80.8% (P <0.0001) and attempted weight loss decreased from 53.0% to 47.2% ( P<0.0001).
Conclusion Although prevalence of overweight and obesity increased from 1989-994 to 2005-08 in United States, awareness of overweight, desire to weigh less and attempted weight loss among overweight and obese adults decreased. More efforts to promote weight loss and awareness of overweight are needed.
- © 2013 by American Heart Association, Inc.