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| Outcome or subgroup title | No. of studies | No. of participants | Statistical method | Effect size |
|---|---|---|---|---|
| 1 Major depressive disorder | 8 | 1100 | Peto Odds Ratio (Peto, Fixed, 95% CI) | 0.44 [0.34, 0.58] |
| 2 Other categories of depression | 6 | 312 | Peto Odds Ratio (Peto, Fixed, 95% CI) | 0.29 [0.18, 0.48] |
