Comparison 9. Standardised mean difference (16‐24 weeks).

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Citalopram versus TCAs	1		Mean Difference (IV, Random, 95% CI)	Subtotals only
1.1 versus Imipramine	1	168	Mean Difference (IV, Random, 95% CI)	0.90 [‐1.02, 2.82]
2 Citalopram versus SNRIs	1		Mean Difference (IV, Random, 95% CI)	Subtotals only
2.1 versus Venlafaxine XR	1	148	Mean Difference (IV, Random, 95% CI)	0.0 [‐2.61, 2.61]
3 Citalopram versus other conventional ADs	1		Mean Difference (IV, Random, 95% CI)	Subtotals only
3.1 versus Reboxetine	1	320	Mean Difference (IV, Random, 95% CI)	‐1.80 [‐3.62, 0.02]