We assessed differences in metabolic disturbances, clinical symptoms, and thyroid dysfunction between MDD patients with and without SA by chi-square test, Fisher’s exact test, and Whitney U test, as appropriate. Bonferroni correction was employed for multiple testing (p’=0.05/40 = 0.00125). A multiple logistic regression model was conducted to identify independent correlates of SA. Variables with P < 0.05 in univariate tests were included in the multiple logistic regression analysis using the stepwise method.
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