Figure 5

Adjusted association between calcium intake (highest versus lowest category of intake (reference) and hypertensive disorders of pregnancy based on case-control studies. Meta-analysis of 5 studies from 3 articles with data from 2,203 pregnant women, including 430 gestational hypertension and 387 pre-eclampsia cases. For each study, the center of each square indicates the odds ratio, 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 odds ratios; and the diamonds are pooled odds ratios (for each outcome and overall).