Haplogroups frequencies and Pearson’s chi-square and OR test in ROU patients and healthy persons.

aTwo test was applied chi-square test.bAdjusted P-value: adjustment of P-values was carried out with binary logistic regression; OR (95% CI).*Stratification chi-square test: because the change only exist in a single group (the emergence of zero), the value of partial regression coefficient (eβ) equal to zero. So binary logistic regression is n’t suitable, P-value is calculated by stratification chi-square test.a. 采用卡方检验（chi-square test）。 b. 校正P值：通过二元逻辑回归（binary logistic regression）对P值进行校正，结果以比值比（OR，95%置信区间（CI））呈现。 *分层卡方检验：由于仅在单个组别中存在变化（出现零值），偏回归系数的指数形式（e^β）取值为0，因此二元逻辑回归不再适用，此时通过分层卡方检验计算P值。