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Increasing fruit and vegetable consumption through worksites and families in the treatwell 5-a-day study.

G Sorensen, A Stoddard, K Peterson, N Cohen, M K Hunt, E Stein, R Palombo and R Lederman

Division of Cancer Epidemiology and Control, Dana-Farber Cancer Institute, Boston, MA 02115, USA. glorian_sorensen@dfci.harvard.edu

OBJECTIVES: We report on the results of the Treatwell 5-a-Day study, a worksite intervention aimed at increasing consumption of fruits and vegetables. METHODS: Twenty-two worksites were randomly assigned to 3 groups: (1) a minimal intervention control group, (2) a worksite intervention, and (3) a worksite-plus-family intervention. The interventions used community-organizing strategies and were structured to target multiple levels of influence, following a socioecological model. Data were collected by self-administered employee surveys before and after the intervention; the response rate was 87% (n = 1359) at baseline and 76% (n = 1306) at follow-up. A process tracking system was used to document intervention delivery. RESULTS: After control for worksite, gender, education, occupation, race/ethnicity, and living situation, total fruit and vegetable intake increased by 19% in the worksite-plus-family group, 7% in the worksite intervention group and 0% in the control group (P = .05). These changes reflect a one half serving increase among workers in the worksite-plus-family group compared with the control group (P = .018). CONCLUSIONS: The worksite-plus-family intervention was more successful in increasing fruit and vegetable consumption than was the worksite intervention. Worksite interventions involving family members appear to be a promising strategy for influencing workers' dietary habits.

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