Comparison 9. Subgroup analysis—category of health worker.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
9.1 Depressive symptoms at 0‐1 months—indicated prevention adults	18	2341	Std. Mean Difference (IV, Random, 95% CI)	‐0.16 [‐0.30, ‐0.03]
9.1.1 Community workers	12	1775	Std. Mean Difference (IV, Random, 95% CI)	‐0.07 [‐0.21, 0.08]
9.1.2 Primary healthcare workers	6	566	Std. Mean Difference (IV, Random, 95% CI)	‐0.35 [‐0.62, ‐0.08]
9.2 Depressive symptoms at 1‐6 months—indicated prevention adults	11	2609	Std. Mean Difference (IV, Random, 95% CI)	‐0.34 [‐0.58, ‐0.10]
9.2.1 Community workers	5	1463	Std. Mean Difference (IV, Random, 95% CI)	‐0.24 [‐0.34, ‐0.14]
9.2.2 Primary healthcare workers	6	1146	Std. Mean Difference (IV, Random, 95% CI)	‐0.44 [‐0.95, 0.08]
9.3 Distress/PTSD symptoms at 0‐1 months—indicated prevention adults	19	2536	Std. Mean Difference (IV, Random, 95% CI)	‐0.54 [‐0.95, ‐0.14]
9.3.1 Community workers	14	1906	Std. Mean Difference (IV, Random, 95% CI)	‐0.19 [‐0.39, 0.00]
9.3.2 Primary healthcare workers	5	630	Std. Mean Difference (IV, Random, 95% CI)	‐1.34 [‐2.90, 0.23]