Table 3.

Subgroup analysis of intervention components

Outcome Measure	Subgroups	Number of Trials Included	Odds Ratio	95% CI	I2	p Value*
Hospitalisation	Community base	2	1.21	0.70 to 2.08	0%
	Non-community base	4	0.74	0.48 to 1.13	0%
	Subgroup difference					0.16
	Nursing background	4	0.96	0.58 to 1.60	9%
	Non-nursing background	2	0.81	0.51 to 1.31	0%
	Subgroup difference					0.63
	High contact	2	0.49	0.19 to 1.30	0%
	Low contact	3	0.97	0.61 to 1.53	19%
	Subgroup difference					0.22
	Supervision	3	0.99	0.60 to 1.62	19%
	No supervision	3	0.78	0.47 to 1.30	0%
	Subgroup difference					0.52
	Low workload	4	0.74	0.48 to 1.13	0%
	High workload	2	1.21	0.70 to 2.08	0%
	Subgroup difference					0.16
Institutionalisation	Community base	4	0.50	0.16 to 1.61	37%
	Non-community base	2	0.93	0.09 to 9.06	70%
	Subgroup difference					0.64
	Nursing background	6	0.44	0.20 to 0.95	23%
	Non-nursing background	2	0.69	0.10 to 4.98	49%
	Subgroup difference					0.67
	High contact	3	0.38	0.11 to 1.34	39%
	Low contact	3	1.05	0.21 to 5.18	43%
	Subgroup difference					0.33
	Supervision	3	0.96	0.47 to 1.95	26%
	No supervision	3	0.27	0.12 to 0.61	0%
	Subgroup difference					0.02
	Low workload	2	0.23	0.08 to 0.67	0%
	High workload	3	1.20	0.27 to 5.32	37%
	Subgroup difference					0.08
Mortality	Community base	4	0.74	0.36 to 1.51	0%
	Non-community base	2	1.71	0.55 to 5.30	0%
	Subgroup difference					0.22
	Nursing background	4	1.44	0.65 to 3.15	0%
	Non-nursing background	3	1.42	0.48 to 4.22	0%
	Subgroup difference					0.99
	High contact	2	0.62	0.23 to 1.65	25%
	Low contact	4	1.50	0.55 to 4.10	0%
	Subgroup difference					0.22
	Low workload	2	0.50	0.18 to 1.36	0%
	High workload	3	1.26	0.52 to 3.03	0%
	Subgroup difference					0.17
Outcome Measure	Subgroups	Number of Trials Included	SMD	95% CI	I2	p Value*
Patient Cognition	Community base	2	0.06	−0.23 to 0.35	0%
	Non-community base	2	−0.21	−0.49 to 0.06	0%
	Subgroup difference					0.18
Caregiver Burden	Supervision	2	−0.78	−1.69 to 0.14	96%
	No Supervision	2	−0.24	−0.49 to 0.02	0%
	Subgroup difference					0.27
Caregiver Mood	High contact	2	−0.05	−0.11 to 0.00	0%
	Low contact	4	0.01	−0.13 to 0.16	1%
	Subgroup difference					0.41
Caregiver quality of life	Nursing background	2	0.94	0.63 to 1.25	0%
	Non-nursing background	2	0.03	−0.32 to 0.39	89%
	Subgroup difference					< 0.001
Outcome Measure	Subgroups	Number of Trials Included	MD	95% CI	I2	p Value*
Patient Behaviour	Low workload	2	−13.2	−28.23 to 1.75	95%
	High workload	2	−5.4	−10.63 to −0.17	0%
	Subgroup difference					0.33

CI Confidence intervals, I ² I squared statistic, MD Mean difference, SMD Standardised mean

*p value is for the subgroup comparisons