ADAMTS13 and obstructive sleep apnea syndrome: , with age, sex, CAD, BMI, smoking habit, SBP, DBP, TG, TC, LDL, HDL, ALT, AST, GGT, uric acid, creatinine, and FBG as covariates, circulating ADAMTS13 levels positively correlated with AHI, which represents the severity of OSA (β = 7.335/100 ng ADAMTS13, 95%CI = 4.285-10.385, P < 0.001).