Comparison 2. Any intervention versus control information.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
2.1 Caregiver burden	9	650	Std. Mean Difference (IV, Random, 95% CI)	‐0.24 [‐0.51, 0.04]
2.1.1 Support/information plus support	2	119	Std. Mean Difference (IV, Random, 95% CI)	‐0.03 [‐0.39, 0.33]
2.1.2 Training/information plus training	6	506	Std. Mean Difference (IV, Random, 95% CI)	‐0.31 [‐0.69, 0.07]
2.1.3 Training and support	1	25	Std. Mean Difference (IV, Random, 95% CI)	‐0.11 [‐0.90, 0.68]
2.2 Caregiver mood	11	1100	Std. Mean Difference (IV, Random, 95% CI)	‐0.25 [‐0.43, ‐0.06]
2.2.1 Support/information plus support	1	94	Std. Mean Difference (IV, Random, 95% CI)	‐0.28 [‐0.69, 0.13]
2.2.2 Training/information plus training	8	816	Std. Mean Difference (IV, Random, 95% CI)	‐0.31 [‐0.54, ‐0.08]
2.2.3 Training and support	2	190	Std. Mean Difference (IV, Random, 95% CI)	0.04 [‐0.24, 0.33]
2.3 Caregiver HRQoL	2	257	Std. Mean Difference (IV, Random, 95% CI)	‐0.03 [‐0.28, 0.21]
2.4 Dropouts for any reason	12	1266	Risk Ratio (M‐H, Random, 95% CI)	1.51 [1.04, 2.20]
2.4.1 Support/information plus support	1	42	Risk Ratio (M‐H, Random, 95% CI)	1.10 [0.17, 7.09]
2.4.2 Training/information plus training	9	994	Risk Ratio (M‐H, Random, 95% CI)	1.51 [0.97, 2.33]
2.4.3 Training and support	2	230	Risk Ratio (M‐H, Random, 95% CI)	1.25 [0.25, 6.22]
2.5 Caregiver knowledge and skills	2	70	Std. Mean Difference (IV, Random, 95% CI)	0.18 [‐0.29, 0.65]
2.5.1 Support/information plus support	1	38	Std. Mean Difference (IV, Random, 95% CI)	0.17 [‐0.47, 0.81]
2.5.2 Training/information plus raining	1	32	Std. Mean Difference (IV, Random, 95% CI)	0.19 [‐0.51, 0.88]
2.6 Institutional care ‐ nursing home placement	1	32	Risk Ratio (M‐H, Random, 95% CI)	2.67 [0.12, 60.93]