Comparison 7. Omega‐3 doses: direct comparisons.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Early preterm birth < 34 weeks	1	224	Risk Ratio (M‐H, Fixed, 95% CI)	0.91 [0.13, 6.38]
2 Prolonged gestation > 42 weeks	1	224	Risk Ratio (M‐H, Fixed, 95% CI)	0.91 [0.06, 14.44]
3 Pre‐eclampsia	1	224	Risk Ratio (M‐H, Fixed, 95% CI)	0.91 [0.06, 14.44]
4 Induction (post‐term)	1	224	Risk Ratio (M‐H, Fixed, 95% CI)	0.10 [0.01, 1.87]
5 PROM	1	224	Risk Ratio (M‐H, Fixed, 95% CI)	0.30 [0.03, 2.89]
6 PPROM	1	224	Risk Ratio (M‐H, Fixed, 95% CI)	1.22 [0.28, 5.32]
7 Length of gestation	2	1474	Mean Difference (IV, Fixed, 95% CI)	0.24 [‐1.16, 1.64]
8 Birthweight (g)	1	224	Mean Difference (IV, Fixed, 95% CI)	‐110.35 [‐242.80, 22.10]
9 Length at birth (cm)	1	224	Mean Difference (IV, Fixed, 95% CI)	0.05 [‐0.80, 0.90]
10 Head circumference at birth (cm)	1	224	Mean Difference (IV, Fixed, 95% CI)	‐0.24 [‐0.87, 0.39]