Figure 5. Forest plots from meta-analyses for the effects of fish oil supplementation on incidence of major bleeding (A), perioperative mortality (B) and length of ICU stay after cardiac surgery (C).

The effect size of each study is proportional to the statistical weight. The diamond indicates the overall summary estimate for the analysis; the width of the diamond represents the 95% CI. ICU, intensive care unit; M-H, Mantel-Haenszel; IV, inverse variance; CI, confidence interval; SD, standard deviation.