Perceived weight status and weight change among a U.S. adult sample
Department of Medicine, Division of Preventive and Behavioral Medicine; UMass Worcester Prevention Research Center
Community Health and Preventive Medicine | Health Psychology | Preventive Medicine | Psychiatry and Psychology
OBJECTIVE: Examine bidirectional associations between weight perception and weight change over time among adults.
METHODS: Data are from adult employees (N = 623) across 12 U.S. public high schools participating in a cluster-randomized multilevel weight gain prevention intervention. Data were collected at baseline, 12 months, and 24 months. Perceived weight status (very/somewhat underweight, just right, somewhat overweight, very overweight) were obtained via self-administered surveys. Weight (kg) was measured by trained staff. Change in weight was calculated as the difference between baseline weight and weight at each follow-up time point. Structural equation models were used to assess bidirectional associations of perceived weight status and change in weight over time. Models were adjusted for study condition, gender, age, race/ethnicity, education level, and previous time point.
RESULTS: The sample was 65% female with a mean age of 44.6 (SD = 11.3). Nearly two thirds of the sample consisted of people with overweight (38.8%) or obesity (27.3%). Structural equation models indicated that baseline weight predicted subsequent perceived weight status (beta = 0.26; P < 0.001), whereas baseline perceived weight status did not predict subsequent change in weight, adjusting for previous time point and covariates.
CONCLUSIONS: Results do not support bidirectional causality between weight perception and weight change in an adult sample.
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Citation: Obesity (Silver Spring). 2017 Jan; 2016 Nov 15. Link to article on publisher's site
Wang, Monica L.; Haughton, Christina F.; Frisard, Christine; Pbert, Lori; Geer, Christine; and Lemon, Stephenie C., "Perceived weight status and weight change among a U.S. adult sample" (2017). University of Massachusetts Medical School Faculty Publications. 1359.