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. 2023 Sep 7;40(4):1249–1258. doi: 10.5114/biolsport.2023.131109

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FIG. 4 — Evolution of the COVID-19 confirmed cases per million people in Qatar (Figure 4A), and in the world (Figure 4B), one-week pre the FIFA world-cup (W-preWC), four weeks during the FIFA-WC (W-1WC to W-4WC), and one week post the FIFA-WC (W-postWC). Data were mean ± standard deviation (95% confidence interval). COVID-19: Coronavirus Disease of 2019.W: week. Analysis of variance (ANOVA): comparison between the 6 weeks for each region. Tukey HSD test (p < 0.005): W-preWC vs. ^a W-1WC; ^b W-2WC; ^c W-3WC; ^d W-4WC; ^e W-postWC; W-1WC vs. ^f W-2WC; ^g W-3WC; ^h W-4WC; ⁱ W-postWC; W-2WC vs. ^j W-3WC; ^k W-4WC; ^l W-postWC; W-3WC vs. ^m W-4WC; ⁿ W-postWC; ^o W-4WC vs. W-postWC.