Table 3. Meta-regression of moderators/correlates of effects of exercise on depression.
| Moderator | RCTs (n) | β | 95%CI | p-value | R2 |
|---|---|---|---|---|---|
| Mean age, control | 6 | 0.122 | -0.083 to 0.327 | 0.24 | 0.02 |
| Mean age, exercise | 6 | 0.049 | -0.209 to 0.308 | 0.70 | 0.00 |
| Females, exercise (%) | 6 | 0.017 | -0.020 to 0.058 | 0.40 | 0.00 |
| Females, control (%) | 6 | 0.005 | -0.042 to 0.042 | 0.99 | 0.00 |
| Baseline depressive symptoms, exercise | 8 | 0.156 | 0.008 to 0.3223 | 0.06 | 0.09 |
| Baseline depressive symptoms, control | 8 | -0.021 | -0.150 to 0.107 | 0.74 | 0.00 |
| Dropout, exercise (%) | 7 | -0.050 | -0.195 to 0.095 | 0.49 | 0.28 |
| Dropout, control (%) | 7 | -0.058 | -0.168 to 0.052 | 0.30 | 0.00 |
| Trial duration | 7 | -0.017 | -0.209 to 0.173 | 0.85 | 0.00 |
| Weekly intervention frequency | 7 | -0.524 | -1.268 to 0.219 | 0.16 | 0.00 |
95%CI = 95% confidence interval; RCTs = randomized clinical trials.