Theproportionofsubjectswithazscore #1.88 (corresponding to the third percentile) was also compared for cases and controls. For this analysis, the SV, CR, and SR groups were analyzed together as the repair-combined (R-C) group to have sufficient sample size. Statistical significance of the difference between cases and controls was evaluated by using Fisher’s exact test with a threshold of P = .05. Differences between CHD categories were evaluated by using logistic regression.