Comparison 9. Subgroup analysis: type of trauma.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 PTSD diagnosis	6		Odds Ratio (M‐H, Random, 95% CI)	Subtotals only
1.1 Community violence	3	769	Odds Ratio (M‐H, Random, 95% CI)	0.59 [0.43, 0.80]
1.2 Interpersonal violence	1	65	Odds Ratio (M‐H, Random, 95% CI)	0.11 [0.02, 0.56]
1.3 Natural disaster	1	166	Odds Ratio (M‐H, Random, 95% CI)	0.16 [0.06, 0.45]
1.4 Physical trauma	1	132	Odds Ratio (M‐H, Random, 95% CI)	1.31 [0.47, 3.68]
2 PTSD total symptoms	18		Std. Mean Difference (IV, Random, 95% CI)	Subtotals only
2.1 Community violence	8	2170	Std. Mean Difference (IV, Random, 95% CI)	‐0.24 [‐0.41, ‐0.06]
2.2 Interpersonal violence	1	65	Std. Mean Difference (IV, Random, 95% CI)	‐0.61 [‐1.11, ‐0.11]
2.3 Life‐threatening illness	1	111	Std. Mean Difference (IV, Random, 95% CI)	‐0.12 [‐0.50, 0.26]
2.4 Maltreatment	1	142	Std. Mean Difference (IV, Random, 95% CI)	‐0.12 [‐0.45, 0.21]
2.5 Natural disaster	1	166	Std. Mean Difference (IV, Random, 95% CI)	‐1.27 [‐1.60, ‐0.94]
2.6 Physical trauma	4	311	Std. Mean Difference (IV, Random, 95% CI)	‐0.02 [‐0.29, 0.26]
2.7 Sexual abuse	2	76	Std. Mean Difference (IV, Random, 95% CI)	‐0.67 [‐1.18, ‐0.16]