Comparison 2. Selective prevention intervention versus control group in preventing mental disorders in adults.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
2.1 Diagnosis of mental disorders at 7‐24 months	1	349	Risk Ratio (M‐H, Random, 95% CI)	1.81 [0.17, 19.82]
2.2 Quality of life at 0‐1 months	3	229	Std. Mean Difference (IV, Random, 95% CI)	‐1.64 [‐2.97, ‐0.31]
2.3 Quality of life at 1‐6 months	5	798	Std. Mean Difference (IV, Random, 95% CI)	‐1.05 [‐1.84, ‐0.26]
2.4 Depressive symptoms at 0‐1 months	4	223	Std. Mean Difference (IV, Random, 95% CI)	‐0.69 [‐1.08, ‐0.30]
2.5 Depressive symptoms at 1‐6 months	3	186	Std. Mean Difference (IV, Random, 95% CI)	‐0.60 [‐1.00, ‐0.21]
2.6 Anxiety symptoms at 1‐6 months	1	2026	Mean Difference (IV, Random, 95% CI)	‐0.80 [‐1.87, 0.27]
2.7 Distress/PTSD symptoms at 0‐1 months	7	535	Std. Mean Difference (IV, Random, 95% CI)	‐0.90 [‐1.44, ‐0.36]
2.8 Distress/PTSD symptoms at 1‐6 months	5	464	Std. Mean Difference (IV, Random, 95% CI)	‐0.67 [‐1.21, ‐0.12]
2.9 Distress/PTSD symptoms at 7‐24 months	1	27	Mean Difference (IV, Random, 95% CI)	8.80 [‐3.55, 21.15]
2.10 Social outcomes at 0‐1 months	3	121	Mean Difference (IV, Random, 95% CI)	‐9.50 [‐15.29, ‐3.70]
2.11 Social outcomes at 1‐6 months	2	236	Std. Mean Difference (IV, Random, 95% CI)	‐0.88 [‐2.56, 0.80]
2.12 Social outcomes at 7‐24 months	1	27	Mean Difference (IV, Random, 95% CI)	‐15.70 [‐28.35, ‐3.05]