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a Comparison of overall survival between patients in the lowest quartile of the sex-standardized SM index (n = 80) vs. the others (n = 243): median; 23 months [95% CI, 17–28] vs. 26 months [95% CI, 21–30], P = 0.075. b Comparison of recurrence-free survival between patients in the lowest quartile of the sex-standardized SM index (n = 80) vs. the others (n = 243): median; 14 months [95% CI, 11–16] vs. 15 months [95% CI, 13–17], P = 0.172
