Comparison 2. Telephone versus non‐telephone support intervention.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Burden	1		Mean Difference (IV, Random, 95% CI)	Subtotals only
1.1 End of intervention	1	11	Mean Difference (IV, Random, 95% CI)	‐0.20 [‐0.74, 0.34]
2 Depression	2		Mean Difference (IV, Random, 95% CI)	Subtotals only
2.1 End of intervention	1	11	Mean Difference (IV, Random, 95% CI)	‐4.3 [‐9.57, 0.97]
2.2 Unknown time point	1	45	Mean Difference (IV, Random, 95% CI)	1.20 [‐5.35, 7.75]
3 Stress	1		Mean Difference (IV, Random, 95% CI)	Subtotals only
3.1 Unknown time point	1	45	Mean Difference (IV, Random, 95% CI)	‐0.60 [‐3.17, 1.97]
4 Physical Health	1		Mean Difference (IV, Random, 95% CI)	Subtotals only
4.1 End of intervention	1	11	Mean Difference (IV, Random, 95% CI)	1.9 [‐0.65, 4.45]