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Work, Weight, and Wellness Program: The 3W Program

This study has been completed.
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI) Identifier:
First received: July 20, 2005
Last updated: July 11, 2016
Last verified: February 2009
The purpose of this study is to increase physical activity, improve diet, and reduce obesity of hotel employees.

Condition Intervention
Cardiovascular Diseases Heart Diseases Obesity Behavioral: Exercise and diet Behavioral: Diet, Weight Reducing Behavioral: Level 1 Behavioral: Level 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Prevention
Official Title: Overweight and Obesity Control in Worksites

Further study details as provided by National Heart, Lung, and Blood Institute (NHLBI):

Primary Outcome Measures:
  • Change in BMI [ Time Frame: Measured at Months 12 and 24 ]

Secondary Outcome Measures:
  • Effects of the intervention on ethnic and occupational subgroups, stage of change, and other issues [ Time Frame: Measured at Months 12 and 24 ]

Estimated Enrollment: 6100
Study Start Date: September 2004
Study Completion Date: October 2008
Primary Completion Date: October 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: 1
Minimal intervention; annual weight/waist assessment, questionnaire, and advice
Behavioral: Exercise and diet
Advice and measurement only
Behavioral: Level 1
Annual assessment of weight and waist circumference, questionnaire on work, health issues, advice on diet, physical activity and other health issues.
Experimental: 2
Intensive intervention. All arm 1 activities plus ongoing environmental and group interventions in worksite for two years.
Behavioral: Diet, Weight Reducing
Measurement, advice, environmental and behavioral group interventions
Behavioral: Level 2
All Level 1 activities plus ongoing environmental interventions in worksite and weight management groups in worksite over a 24 month period.

Detailed Description:


In Hawaii, as in many other states, tourism is a large industry. Most hotel jobs require little education or training, and hotels employ large numbers of persons and immigrants with low socioeconomic status. Hawaii, with the world's most ethnically diverse population, has high rates of obesity and diabetes, particularly among those of Polynesian ancestry (about 20-22% of the population). This study will include a comprehensive lifestyle change program delivered through worksites in partnership with a large health care system.


Thirty-one hotels employing 11,000 persons on the island of Oahu are pair-matched. One member of each pair is assigned to a high intensity intervention and the other to a low intensity intervention. Both interventions are intended to reduce BMI through an emphasis on a healthy diet and increased physical activity. All employees are assessed annually for three consecutive years. The assessment includes a survey on lifestyle habits, stage of change, and attitudes toward weight, as well as measurement of BMI. The high intensity intervention hotels receive the following: 1) environmental changes to support lifestyle change and obesity control; 2) worksite based groups that offer state-of-the-art behavioral interventions; and 3) after-hours "Re-Invent Yourself" groups designed for persons who want to lose at least 25 pounds and are highly committed to doing it. These interventions incorporate all the elements that produce sustained weight loss and an innovative decision tutorial based on decision theory. The primary outcome is the mean difference between hotels in the high intensity and low intensity interventions in change in BMI from baseline to 12 and 24 months. Secondary outcomes address effects of the intervention on ethnic and occupational subgroups stage of change, absentee days, and worker compensation claims.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Employed at the hotel

Exclusion Criteria:

  • Unable to read English, Korean, or Chinese
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00123019

United States, Hawaii
Kaiser Permanente Center for Health Research, Hawaii
Honolulu, Hawaii, United States, 96713
Sponsors and Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
Study Chair: Thomas Vogt, MD, MPH Kaiser Permanente
  More Information

Responsible Party: Thomas M. Vogt, MD, MPH, Kaiser Permanente Center for Health Research, Hawaii Identifier: NCT00123019     History of Changes
Obsolete Identifiers: NCT00119808
Other Study ID Numbers: 230
R01HL079505 ( U.S. NIH Grant/Contract )
Study First Received: July 20, 2005
Last Updated: July 11, 2016

Additional relevant MeSH terms:
Cardiovascular Diseases
Heart Diseases
Nutrition Disorders
Body Weight
Signs and Symptoms processed this record on August 18, 2017