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. 2017 Dec 26;318(24):2466–2482. doi: 10.1001/jama.2017.19344

Figure 2. Meta-analysis Results of Calcium Supplementation for the Incidence of Hip, Nonvertebral, Vertebral, and Total Fractures.

Figure 2.

Size of data markers is proportional to the weight of each trial. Risk ratios and 95% CIs were calculated using the Mantel-Haenszel method, with a random-effects model used to pool data. Error bars indicate 95% CIs. Risk ratio data are rounded to 2 decimal places; error bars reflect unrounded values. Trials with zero events in both the intervention and control groups are not included in the meta-analysis.