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A forest plot of nine studies. The meta-analysis shows a twofold increase of CTS risk among workers of the risk group. Each line represents one study and horizontal lines indicate range of 95% CI. Solid circles indicate RR of the study. Statistical weight of the study is expressed by proportional size (gray boxes) based on sample size. Right column shows numerical value of forest plot. CI, confidence interval; CTS, carpal tunnel syndrome; RR, relative risk.
