Table 3– Relationships between each metabolic syndrome component and obstructive sleep apnoea severity assessed by apnoea/hypopnoea index (AHI) or mean nocturnal arterial oxygen saturation (Sa,O2)
AHIMean Sa,O2
UnadjustedModel 1#Model 2UnadjustedModel 1#Model 2
βp-valueβp-valueβp-valueβp-valueβp-valueβp-value
Waist circumference1.067<0.0010.409<0.0010.258ns-0.155<0.001-0.076<0.001-0.0500.03
Systolic blood pressure0.627<0.0010.414<0.0010.3950.001-0.056<0.001-0.0200.03-0.016ns
Diastolic blood pressure0.752<0.0010.524<0.0010.4950.001-0.069<0.001-0.039<0.001-0.0330.006
Fasting blood glucose0.214<0.0010.013ns0.012ns-0.036<0.001-0.009ns-0.009ns
Serum triglycerides+10.401<0.0011.517ns0.575ns-1.952<0.001-0.5990.04-0.442ns
HDL cholesterol-0.1610.02-0.010ns0.037ns0.037<0.0010.0180.030.011ns
  • HDL: high-density lipoprotein. #: adjusted for age, smoking and body mass index (BMI); : adjusted for age, smoking, BMI and sex; +: log-transformed. NS: nonsignificant.