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. 2019 Jan 9;14(1):e0200967. doi: 10.1371/journal.pone.0200967

Fig 3. Forest plot outcome of PPARGC1A Gly allele effects on SP endurance in the PRO analysis.

Fig 3

Diamond denotes the pooled odds ratio (OR). Squares indicate the OR in each study, with square sizes directly proportional to the weight contribution (%) of each study. Horizontal lines represent 95% confidence intervals (CI). The Z test for overall effect indicates significance (P = 0.03). The χ 2 test shows presence of heterogeneity (P = 0.0005, I2 = 68%). LEGEND: M-H: Mantel-Haenszel; I2: measure of variability expressed in %; CID, confidence interval difference.