Comparison 1. Functional analysis versus usual care ‐ primary outcomes at post‐intervention.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Incidence of problem behaviours ‐ family care only	4	722	Std. Mean Difference (IV, Fixed, 95% CI)	0.02 [‐0.13, 0.17]
2 Frequency of problem behaviours	12	1551	Std. Mean Difference (IV, Fixed, 95% CI)	‐0.10 [‐0.20, ‐0.00]
2.1 Family care	10	1046	Std. Mean Difference (IV, Fixed, 95% CI)	‐0.05 [‐0.17, 0.07]
2.2 Residential care	2	505	Std. Mean Difference (IV, Fixed, 95% CI)	‐0.21 [‐0.39, ‐0.03]
3 Severity of problem behaviours	5	449	Std. Mean Difference (IV, Fixed, 95% CI)	‐0.10 [‐0.29, 0.08]
3.1 Family care	2	142	Std. Mean Difference (IV, Fixed, 95% CI)	‐0.25 [‐0.58, 0.08]
3.2 Residential care	3	307	Std. Mean Difference (IV, Fixed, 95% CI)	‐0.03 [‐0.26, 0.19]
4 Patient depression	3	480	Std. Mean Difference (IV, Fixed, 95% CI)	‐0.15 [‐0.33, 0.03]
4.1 Family care	2	375	Std. Mean Difference (IV, Fixed, 95% CI)	‐0.08 [‐0.29, 0.12]
4.2 Residential care	1	105	Std. Mean Difference (IV, Fixed, 95% CI)	‐0.38 [‐0.77, 0.00]