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Funnel plot of risk difference of isoflavones tablets versus placebo on serum total cholesterol. Total treatment size was 274 and total control was 208. The pooled risk difference of isoflavones tablets versus placebo was 0.01 with 95% confidence interval between -0.17 and 0.18. Heterogeneity p-value was 1.00. Note: 'N' = sample size; 'SD' = standard deviation; 'RD' = risk difference; '95% CI' = 95% confidence interval
