Objectives. We evaluated the effect of a weight gain prevention intervention
(ShapeProgram) on depression among socioeconomically disadvantaged over-weight and obese Black women.
Methods.Between 2009 and 2012, we conducted a randomized trial comparing a
12-month electronic health-based w eight gain prevention intervention to usual
primary care at 5 central North Carolina community health centers. We assessed
depression with the Patient Health Questionnaire (PHQ-8). We analyzed change in
depression score from baseline to 12- and 18 -month follow -up across groups with
mixed models. We used generalized estimating equation models to analyze group
differences in the proportion above the clinical threshold for depression (PHQ-8
score > 10).
Results. At baseline, 20% of participants reported depression. Twelve-month
change in depression scores was larger for intervention participants (mean difference
= -1.85 ; 95% confidence interval = -3 .0 8 , -0.61 ; P = .004). There was a significant
reduction in the proportion of intervention participants with depression at 12 months
with no change in the usual-care group (11% vs 19%; P = .035). All effects persisted
after we controlled for weight change and medication use. We saw similar findings
at 18 months.
Conclusions. The Shape Program, which includes no mention of mood,
improved depression among socioeconomically disadvantaged Black women .