Comparison 9. Sensitivity analysis: fixed‐effect instead of random‐effects model.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Depression severity (2 weeks, range 1–4 weeks)	10	598	Std. Mean Difference (IV, Fixed, 95% CI)	‐0.27 [‐0.43, ‐0.10]
1.1 Short‐acting hypnotics	2	104	Std. Mean Difference (IV, Fixed, 95% CI)	‐0.07 [‐0.46, 0.32]
1.2 Anxiolytics or long‐acting hypnotics	9	494	Std. Mean Difference (IV, Fixed, 95% CI)	‐0.31 [‐0.49, ‐0.13]