Comparison 1. Health status outcomes.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Pregnancy support	1		Mean Difference (IV, Random, 95% CI)	Totals not selected
1.1 Satisfaction during pregnancy	1		Mean Difference (IV, Random, 95% CI)	0.0 [0.0, 0.0]
1.2 Confidence during pregnancy	1		Mean Difference (IV, Random, 95% CI)	0.0 [0.0, 0.0]
1.3 Less anxiety during pregnancy	1		Mean Difference (IV, Random, 95% CI)	0.0 [0.0, 0.0]
2 Pregnancy outcomes (dichotomous outcomes)	1		Risk Ratio (M‐H, Random, 95% CI)	Subtotals only
2.1 Preterm delivery	1	61	Risk Ratio (M‐H, Random, 95% CI)	0.18 [0.01, 3.64]
2.2 Cesarean section delivery	1	61	Risk Ratio (M‐H, Random, 95% CI)	1.09 [0.37, 3.19]
3 Pregnancy outcomes (continuous outcomes)	1		Mean Difference (IV, Random, 95% CI)	Subtotals only
3.1 Birth weight (gm)	1	61	Mean Difference (IV, Random, 95% CI)	‐137.0 [‐412.87, 138.87]
3.2 Gestational age in delivery (weeks)	1	61	Mean Difference (IV, Random, 95% CI)	0.10 [‐0.45, 0.65]