COG2 and obstructive sleep apnea syndrome: After adjusting for all confounding factors (model 3), compared with the lowest quartile group, the ORs with 95%CI for the prevalence of OSA were 1.277(1.037,1.572), 1.452(1.182,1.784), and 1.367(1.107,1.688) for triglyceride, and 1.180(0.976,1.426), 1.078(0.891,1.303), and 1.212(1.004,1.462) for LDL-C in the second, third, and highest quartile groups, respectively.