Figure 3

Difference in unadjusted magnesium intake (mg/day) between cases (gestational hypertension and pre-eclampsia) and non-cases (reference) reported in cohort studies. For each study, the center of each square indicates the weighted mean difference (WMD), and the horizontal line indicates the 95% confidence interval; the area of the square is proportional to the weight that the individual study contributes to the overall pooled mean difference; and the diamonds are pooled mean differences (for each outcome and overall). Meta-analysis of 5 studies from 3 articles with data from 6,616 pregnant women, including 866 gestational hypertension and 408 pre-eclampsia cases.