Summary of findings 8. Antidepressant plus antipsychotic compared to placebo plus the same antidepressant for psychotic depression.

Antidepressant plus antipsychotic compared to placebo plus the same antidepressant for psychotic depression
Patient or population: adults with psychotic depression Setting: hospital Intervention: antidepressant plus antipsychotic Comparison: placebo plus the same antidepressant
Outcomes	Anticipated absolute effects* (95% CI)		Relative effect (95% CI)	№. of participants (studies)	Certainty of evidence (GRADE)	Comments
	Risk with placebo plus the same antidepressant	Risk with antidepressant plus antipsychotic
Clinical response of depression	Study population		RR 1.70 (1.19 to 2.43)	157 (3 RCTs)	⊕⊕⊝⊝ Very lowa,b,c	One study defined response as HAMD‐17 < 11, another study defined response as HRSD‐17 < 7, and a third study defined response as ≧ 50% decrease in HAMD‐17 scores from baseline to study endpoint
	351 per 1000	596 per 1000 (417 to 852)
Overall dropouts	Study population		RR 1.04 (0.52 to 2.07)	157 (3 RCTs)	⊕⊝⊝⊝ Very lowa,b,d
	169 per 1000	176 per 1000 (88 to 349)
Depression remission	See comment		‐	‐	‐	No study reported this outcome
Change in depression severity from baseline	See comment		‐	‐	‐	No study reported this outcome
Quality of life	See comment		‐	‐	‐	No study reported this outcome
Dropouts due to adverse effects	See comment		‐	‐	‐	No study reported this outcome
*The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI). CI: confidence interval; HAMD: Hamilton Depression Rating Scale; HRSD: Hamilton Rating Scale for Depression; RCT: randomised controlled trial; RR: risk ratio.
GRADE Working Group grades of evidence. High certainty: we are very confident that the true effect lies close to that of the estimate of the effect. Moderate certainty: we are moderately confident in the effect estimate: the true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different. Low certainty: our confidence in the effect estimate is limited: the true effect may be substantially different from the estimate of the effect. Very low certainty: we have very little confidence in the effect estimate: the true effect is likely to be substantially different from the estimate of effect.

^aDowngraded one level for high risk of other source of bias.

^bDowngraded one level for high risk of publication bias.

^cDowngraded one level for imprecision due to small sample size.

^dDowngraded one level for imprecision due to small sample size; CIs are consistent with appreciable harm and appreciable benefit.