Maternal multiple micronutrient supplementation and pregnancy outcomes in developing countries: meta-analysis and meta-regression
Kosuke Kawai, Donna Spiegelman, Anuraj H Shankar & Wafaie W Fawzi
Volume 89, Number 6, June 2011, 402-411B
Table 2. Summary of pooled estimates for the effect of maternal micronutrient supplementation on pregnancy outcomes
|Pregnancy outcome||No. of trials||Pooled RR or mean difference (95% CI)||I2 (P-value)|
|Low birth weighta||15||0.86 (0.79–0.93)||41% (0.05)|
|Birth weight||15||44 g (28–60)||57% (0.003)|
|Preterm birthb||14||0.99 (0.95–1.03)||0% (0.63)|
|Small size for gestational agec||15||0.85 (0.78–0.93)||47% (0.02)|
|Perinatal deathd||11||1.05 (0.90–1.22)||58% (0.008)|
|Neonatal deathe||11||1.08 (0.92–1.26)||28% (0.17)|
CI, confidence interval; RR, relative risk.
a Birth weight < 2500 g.
b Birth before the 37th week of gestation.
c Birth weight below the 10th percentile of weight for gestational age.
d Death from the 28th week of gestation through the first week postpartum.
e Death within 28 days of delivery.