Table 1.
Available meta-analyses on neonatal outcomes (preterm birth, low birth weight, and SGA).
| Study | Neonatal outcome | Number of trials included | Risk reduction | Inclusion/exclusion criteria | Publication bias (size /negative) | Conclusion/effect |
|---|---|---|---|---|---|---|
| Thorne-Lyman and Fawzi [2012] | Low birth weight | 3 | RR 0.40; 95% CI 0.23–0.71 | Defined | Not assessed | Protective |
| SGA | 2 | RR 0.67; 95% CI 0.40–1.11 | Defined | Not assessed | Protective | |
| De-Regil et al. [2016] | Low birth weight | 3 | RR 0.40; 95% CI 0.24–0.67 | Defined | Included | Protective |
| Preterm birth | 3 | RR 0.36; 95% CI 0.14–0.93 | Defined | Included | Protective | |
| Perez-Lopez et al. [2015] | Low birth weight | 4 | RR 0.72; 95% CI 0.44–1.16 | Defined | Included | No effect |
| Preterm birth | 3 | RR 1.26; 95% CI 0.60–2.63 | Defined | Included | No effect | |
| SGA | 3 | RR 0.78; 95% CI 0.50–1.21 | Defined | Included | No effect |
CI, confidence interval; RR, Relative risk; SGA, small for gestational age.