Comparison 3. Sensitivity analyses.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Sensitivity analysis 1: improvement in depression (endpoint)	3	400	Risk Ratio (M‐H, Random, 95% CI)	0.94 [0.85, 1.04]
2 Sensitivity analysis 1: change from baseline mean depression score (endpoint)	4	640	Std. Mean Difference (IV, Random, 95% CI)	‐0.08 [‐0.24, 0.08]
3 Sensitivity analysis 1: acceptability of the intervention (as measured by participants not attending follow‐up)	9	1382	Risk Ratio (M‐H, Random, 95% CI)	1.29 [0.88, 1.90]
4 Sensitivity analysis 2: improvement in depression (intervention endpoint)	2	141	Risk Ratio (M‐H, Random, 95% CI)	1.16 [0.78, 1.74]
5 Sensitivity analysis 2: change from baseline mean depression score (intervention endpoint)	3	404	Std. Mean Difference (IV, Random, 95% CI)	‐0.05 [‐0.31, 0.21]
6 Sensitivity analysis 2: acceptability of intervention (as measured by participants not attending follow‐up)	8	1392	Risk Ratio (M‐H, Random, 95% CI)	0.91 [0.66, 1.24]