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. 2010 Nov-Dec;34(6):707-20.
doi: 10.5993/ajhb.34.6.7.

Long-term fruit and vegetable change in worksites: Seattle 5 a Day follow-up

Shirley A A Beresford  1 , Beti Thompson, Sonia Bishop, Jessica Macintyre, Dale McLerran, Yutaka Yasui
Affiliations

Long-term fruit and vegetable change in worksites: Seattle 5 a Day follow-up

Shirley A A Beresford et al. Am J Health Behav. 2010 Nov-Dec.

Abstract

Objective: To evaluate long-term change in fruit and vegetable intake following a group randomized trial of worksites.

Methods: Medium-sized blue-collar businesses in the Seattle metropolitan area were recruited. Intake was assessed using serial cross-sectional samples of current workforce at 3 time points. The multilevel 18-month intervention involved partnership with the companies. Long-term follow-up was at 4.4 years postbaseline. Statistical analysis used general linear models, adjusting for worksite random effects.

Results: Initially, 45 worksites were randomized, with 29 agreeing to participate in a new study. Fruits and vegetable intake increased, with larger sustained changes in the intervention worksites, resulting in a long-term differential change of 0.25 servings per day, 95% confidence interval (0.09 to 0.40).

Conclusions: Intervention sustained small effects at 4 years, including 2 years with no contact. Although effects were not large, this low-intensity intervention approach could provide an important public health model.

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Figures

Figure 1
Figure 1
Design of Seattle 5 a Day Showing Long-term Follow-up After Recontact for New Study
Figure 2
Figure 2
Fruit and Vegetable Intake (A) and Readines to Change (B)Over Time by Intervention Arm in 29 Worksites
See this image and copyright information in PMC

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