Comparison 11. Sensitivity analysis: limiting studies to those reporting on 50% reduction on Hamilton Rating Scale for Depression.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Response (2 weeks, range 1–4 weeks)	4	358	Risk Ratio (IV, Random, 95% CI)	1.28 [1.06, 1.55]