Table 2.
Self-reported depression outcomes (CES-D) for total samples and subsamples
| Baseline | 4 Week | 8 Week | 16 Week | 32 Week | Significance | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | ||
| Total sample | .86 | ||||||||||
| Intervention (n = 144) | 30.5 | 12.3 | 23.1 | 11.9 | 22.4 | 11.4 | 21.7 | 13.3 | 21.3 | 13.1 | |
| Control (n = 155) | 31.2 | 11.7 | 26.2 | 13.3 | 22.4 | 13.5 | 22.7 | 12.6 | 23.0 | 14.0 | |
| Depression cases | .12* | ||||||||||
| Intervention (n = 107) | 30.7 | 12.9 | 23.1 | 11.9 | 23.7 | 11.9 | 23.0 | 13.5 | 22.2 | 12.8 | |
| Control (n = 116) | 31.3 | 11.5 | 26.7 | 13.1 | 23.7 | 14.0 | 23.2 | 12.8 | 25.5 | 14.2 | |
| Nondepressed cases | |||||||||||
| Intervention (n = 37) | 30.0 | 10.6 | 23.2 | 12.3 | 18.6 | 8.7 | 17.8 | 12.3 | 18.6 | 13.9 | |
| Control (n = 39) | 30.7 | 12.4 | 24.6 | 14.1 | 19.1 | 11.9 | 21.0 | 12.0 | 16.0 | 10.8 | |
| High baseline CES-D cases | .12† | ||||||||||
| Intervention (n = 112) | 35.1 | 9.5 | 26.3 | 11.6 | 25.1 | 11.0 | 24.8 | 13.6 | 25.6 | 12.5 | |
| Control (n = 124) | 35.4 | 8.7 | 29.3 | 12.4 | 24.6 | 13.0 | 24.5 | 12.4 | 25.2 | 13.6 | |
| Low baseline CES-D cases | |||||||||||
| Intervention (n = 32) | 14.3 | 5.2 | 15.3 | 8.9 | 14.8 | 8.7 | 13.8 | 8.8 | 10.2 | 6.6 | |
| Control (n = 31) | 14.3 | 5.1 | 15.25 | 10.4 | 15.2 | 13.0 | 15.5 | 11.2 | 15.0 | 12.4 | |
| Female | .85* | ||||||||||
| Intervention (n = 106) | 31.5 | 12.2 | 23.2 | 12.5 | 22.5 | 11.3 | 21.6 | 12.9 | 21.6 | 13.6 | |
| Control (n = 120) | 31.4 | 11.9 | 25.9 | 14.0 | 22.6 | 13.6 | 23.2 | 12.2 | 22.5 | 13.6 | |
| Male | |||||||||||
| Intervention (n = 38) | 27.6 | 12.3 | 22.8 | 10.4 | 22.2 | 11.7 | 22.0 | 14.8 | 20.6 | 11.8 | |
| Control (n = 35) | 30.4 | 11.2 | 27.2 | 10.8 | 21.8 | 13.4 | 20.7 | 14.1 | 24.7 | 15.3 | |
| Age 45 or older | .95† | ||||||||||
| Intervention (n = 69) | 28.6 | 11.8 | 22.4 | 10.5 | 21.7 | 9.3 | 21.0 | 12.3 | 21.9 | 11.9 | |
| Control (n = 75) | 28.2 | 11.4 | 23.4 | 13.2 | 20.5 | 14.8 | 21.6 | 14.2 | 21.5 | 14.6 | |
| Younger than age 45 | |||||||||||
| Intervention (n = 75) | 32.3 | 12.6 | 23.7 | 13.0 | 23.1 | 13.0 | 22.3 | 14.3 | 20.7 | 14.3 | |
| Control (n = 80) | 34.0 | 11.3 | 28.8 | 13.0 | 24.4 | 11.9 | 23.7 | 11.1 | 24.3 | 13.4 | |
P value for the interaction term of sex x treatment group x time (test of whether the effect of treatment on CES-D score change differed by sex)
P value for the interaction term of age group x treatment group x time (test of whether the effect of treatment on CES-D score change differed by age group)