title: The results of a 2-year randomized trial of a worksite weight management intervention.
abstract: OBJECTIVE
  We assessed the effectiveness of a worksite management intervention (the 3W program) for overweight and obese hotel employees.
  
  
  METHODS
  The program was tested in a 2-year cluster-randomized trial involving 30 hotels that employed nearly 12,000 individuals.
  
  
  METHODS
  All participating hotels were on Oahu, Hawaii. The intervention was implemented within hotel worksites.
  
  
  METHODS
  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.
  
  
  METHODS
  The intervention had two components: (1) group meetings and (2) a workplace environment intervention.
  
  
  METHODS
  Weight and waist to height ratio (WHtR) were measured at three annual assessments.
  
  
  METHODS
  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.
  
  
  CONCLUSIONS
  The 3W program was not effective. The low intensity of the intervention may have contributed to its ineffectiveness.
authors: Andrew E
authors: AE
authors: Williams
authors: Victor J
authors: VJ
authors: Stevens
authors: Cheryl L
authors: CL
authors: Albright
authors: Claudio R
authors: CR
authors: Nigg
authors: Richard T
authors: RT
authors: Meenan
authors: Thomas M
authors: TM
authors: Vogt
mesh_terms: D015992:Body Mass Index; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000628:therapy; D016272:Occupational Health; D050177:Overweight / Q000628:therapy; D015431:Weight Loss; D061217:Weight Reduction Programs / Q000379:methods*; D017132:Workplace