Multi-Level Trial of a Workplace Sales Ban of Sugary Beverages and Brief Motivational Counseling Intervention on Adiposity
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Enrollment
- 604
- Locations
- 1
- Primary Endpoint
- Change in Abdominal Adiposity (Waist Circumference)
Study Overview
Brief Summary
The purpose of the study is to test the impact of a multilevel workplace intervention (hospital-wide sales ban on sugar-sweetened beverages (SSBs) and individual-level brief counseling) on employee health.
Detailed Description
This double-randomized controlled trial of a multilevel workplace intervention that combines an employer-sponsored sales ban on sugar-sweetened beverages (SSBs) with brief counseling to support reduced consumption will test how well each intervention works alone, whether they work better in combination than separately, and whether or not changes in SSB cravings mediate these effects. Sutter Health worksites will be randomly assigned to either a control condition or to implement a sales ban on SSBs. Within all sites, employees will be randomized to receive/not receive a brief counseling intervention focused on reducing SSB consumption. Participants will complete self-report questionnaires, give blood samples, and provide measurements of waist circumference, height, and weight. These data will be analyzed to determine the effects of the interventions, both separately and in combination.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Factorial
- Primary Purpose
- Prevention
- Masking
- None
Masking Description
The study is a double-randomized, controlled trial of 700 Sutter Health employees working at 16 hospital campuses. The hospital campuses will be randomized to sales ban or control. After screening employees at the 16 campuses for heavy SSB consumption (> 30 oz/week), the investigators will further randomize study participants to receive the brief counseling intervention or not.
Eligibility Criteria
- Ages
- 18 Years to — (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •Full-time employee who works on campus at one of the Sutter Health participating sites
- •Speaks and reads English
- •Consumes three or more sugar-sweetened beverages (SSB) a week
- •Agrees to participate in two fasting blood draws
Exclusion Criteria
- Not provided
Arms & Interventions
Control: No workplace SSB sales ban, no brief intervention
Participants receive no workplace SSB sales ban (environmental intervention) and no brief counseling intervention.
Workplace SSB sales ban only
Participants receive a workplace SSB sales ban (environmental intervention). This entails the removal of SSBs from all workplace sales outlets, replacing them with non-sugary beverage options.
Intervention: Workplace SSB sales ban (Other)
Brief intervention only
Participants receive a 20-30 minute intervention by video call, with 2 booster telephone calls. One week and one month after the initial session, participants will have 10-minute check-in/booster phone calls.
Intervention: Brief Intervention (Behavioral)
Multilevel Intervention (workplace SSB sales ban + brief intervention)
Sales ban: Participants receive a workplace SSB sales ban (environmental intervention). This entails the removal of SSBs from all workplace sales outlets, replacing them with non-sugary beverage options.
Brief Intervention: Participants receive a 20-30 minute intervention by video call, with 2 booster telephone calls. One week and one month after the initial session, participants will have 10-minute check-in/booster phone calls.
Intervention: Workplace SSB sales ban (Other)
Multilevel Intervention (workplace SSB sales ban + brief intervention)
Sales ban: Participants receive a workplace SSB sales ban (environmental intervention). This entails the removal of SSBs from all workplace sales outlets, replacing them with non-sugary beverage options.
Brief Intervention: Participants receive a 20-30 minute intervention by video call, with 2 booster telephone calls. One week and one month after the initial session, participants will have 10-minute check-in/booster phone calls.
Intervention: Brief Intervention (Behavioral)
Outcomes
Primary Outcomes
Change in Abdominal Adiposity (Waist Circumference)
Time Frame: Baseline and 12 Months
Waist circumference in centimeters (using method from Multi-Ethnic Study of Atherosclerosis). The study will measure the change between baseline and 12 month Abdominal Adiposity measurements.
Change in Insulin Sensitivity (HOMA)
Time Frame: Baseline and 12 Months
Insulin sensitivity will be calculated using the homeostatic model assessment (HOMA). The equation for HOMA is fasting insulin (microU/L) x fasting glucose (nmol/L)/22.5. The study will measure the change between baseline and 12 month HOMA.
Secondary Outcomes
- Change in Lipid Profile Measurements(Baseline and 12 Months)
- Change in Fasting Glucose Levels(Baseline and 12 Months)
- Change in Quantity of SSB Consumption(Baseline and 12 Months)
- Change in Body Mass Index (BMI)(Baseline and 12 Months)
- Change in ApoB Levels(Baseline and 12 Months)
- Change in Fasting insulin Levels(Baseline and 12 Months)