A Randomized Trial of the Little by Little CD-ROM: Demonstrated Effectiveness in Increasing Fruit and Vegetable Intake in a Low-Income Population
By Block G, Wakimoto P, Metz D, Fujii M, Feldman N, Mandel R, Sutherland B
Introduction: Research indicates that low fruit and vegetable intake is a risk factor for many chronic diseases. Despite large-scale education campaigns, the great majority of Americans do not consume recommended levels. We tested the ability of a single brief interactive experience of the Little by Little CD-ROM to increase fruit and vegetable intake in low-income women.
Methods: A randomized placebo-controlled, parallel-group trial included 481 low-income, female participants: mean age 50.1 years, 48.4% African American, 51.6% non-Hispanic white, and 92.5% below 185% of the federally designated poverty level. Participants received one of three conditions: 1) a one-time experience with the Little by Little CD-ROM, 2) the Little by Little CD-ROM plus two reminder telephone calls, or 3) a stress management CD-ROM (control condition). We assessed baseline and follow-up dietary intake with a modified 24-hour recall.
Results: Two months after the one-time experience with the CD-ROMs, both intervention groups reported significantly higher intakes of fruits and vegetables than the control group. The Little by Little group with reminder calls increased daily intake by 1.32 fruits/vegetables, an 86% greater increase than the control group (P = .016). The Little by Little group without reminder calls increased daily intake by 1.20 fruits/vegetables, a 69% greater increase than the control group (P = .052). Significantly greater movement in Stage of Readiness for Change also occurred in the Little by Little groups compared with the control group.
Conclusion: The Little by Little CD-ROM may be useful in public health and clinical situations to increase fruit and vegetable intake.
March 21, 2018
Block G, Wakimoto P, Metz D, Fujii M, Feldman N, Mandel R, Sutherland B (2004) A Randomized Trial of the Little by Little CD-ROM: Demonstrated Effectiveness in Increasing Fruit and Vegetable Intake in a Low-Income Population. Preventing Chronic Disease: Vol. 1, Issue 3, p. A08. Available online: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1253473/