Fig. 2.

Pooled weighted mean differences in weight reduction between vegetarian and non-vegetarian diets. Effects on estimated weight reduction for each study depicted as solid squares; error bars indicate 95 % CIs. The pooled estimate of −1.99 kg (95 % CI, −2.72 to −1.25) of weight loss is shown as the diamond. RE random effect, Weight inverse variance weight, WMD weighted mean difference, CI confidence interval