Abstract
Few evidence-based programs exist to help women with a history of gestational diabetes reduce their risk of developing type 2 diabetes. In secondary analyses from a randomized clinical trial of a web-based lifestyle intervention program for postpartum women with recent gestational diabetes, we studied changes in self-efficacy for diet and physical activity and readiness to change health behaviors. Women were randomized at ∼6 weeks postpartum and completed questionnaires at 6 weeks and 6, 12, 18, and 24 months. Our study included 181 women (mean age 32.4 ± 5.2 years; 48% White, 19% Asian, 14% Black or African American, 17% other/mixed race; 34% Hispanic). In a linear mixed effects model, women in the intervention had significantly greater improvement in overall self-efficacy scores for physical activity compared with the control group at 24 months (difference in change scores between groups .35, 95% CI: .03 to .67, P = .03). The intervention group also demonstrated significantly greater improvement in self-efficacy scores for both physical activity subdomains, specifically “sticking to it” at 24 months and “making time” at 12 months. Participants in the intervention did not experience a significant difference in change in self-efficacy for diet or readiness to change compared with those in the control arm.
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