Figure 4.

Forest plots of obstetric and neonatal outcomes (vaccinated pregnant women vs unvaccinated pregnant women).

(a) The risk of premature delivery in vaccinated pregnant women vs unvaccinated pregnant women (OR = 0.83, 95% CI: 0.65-1.06, P = 0.13, I² = 54%); (b) Subgroup analysis; (c) The odds of placental abruption (OR = 0.60, 95% CI: 0.29-1.21, P = 0.15, I² = 6%); (d) The odds of postpartum hemorrhage (OR = 0.91, 95% CI: 0.64-1.29, P = 0.59, I² = 19%); (e) The odds of miscarriage (OR = 1.12, 95% CI: 1.00-1.27, P = 0.05, I² = 0%); (f) The odds of stillbirth (OR = 1.42, 95% CI: 0.53-3.76, P = 0.49, I² = 0%); (g) The odds of SGA (OR = 1.03, 95% CI: 0.90-1.18, P = 0.70, I² = 18%).

CI, confidence interval; OR, odds ratio.