The results of a 2-year randomized trial of a worksite weight management intervention.
Maine Medical Center Research Institute, Center for Outcomes Research and Evalution
American journal of health promotion : AJHP
Body Mass Index, Female, Humans, Male, Middle Aged, Obesity, Occupational Health, Overweight, Weight Loss, Weight Reduction Programs, Workplace
PURPOSE: We assessed the effectiveness of a worksite management intervention (the 3W program) for overweight and obese hotel employees.
DESIGN: The program was tested in a 2-year cluster-randomized trial involving 30 hotels that employed nearly 12,000 individuals.
SETTING: All participating hotels were on Oahu, Hawaii. The intervention was implemented within hotel worksites.
SUBJECTS: Participants were included in the analysis if they had an initial body mass index (BMI) ≥ 25, were assessed at least twice, were not missing other data needed for the analysis, and did not switch to employment at a hotel in a different experimental condition. Of the 6519 employees we assessed, data from 1207 individuals (intervention: 598; control: 610) met these criteria and contributed to the analysis.
INTERVENTION: The intervention had two components: (1) group meetings and (2) a workplace environment intervention.
MEASURES: Weight and waist to height ratio (WHtR) were measured at three annual assessments.
ANALYSIS: The effect of the intervention on change in BMI and WHtR was estimated in hierarchical mixed regression models using full maximum likelihood to estimate model parameters.
RESULTS: The effects on change in BMI and WHtR were in the expected direction but were not statistically significant.
CONCLUSION: The 3W program was not effective. The low intensity of the intervention may have contributed to its ineffectiveness.
Williams, Andrew E; Stevens, Victor J; Albright, Cheryl L; Nigg, Claudio R; Meenan, Richard T; and Vogt, Thomas M, "The results of a 2-year randomized trial of a worksite weight management intervention." (2014). Maine Medical Center. 1315.