Table 3.
Bivariate correlations between sleep parameters and metabolic variables in subjects without moderate-to-severe OSA.
| BMI (kg/m2) | Glucose (mmol/L) | Insulin (μU/ml) | SBP (mmHg) |
DBP (mmHg) |
TC (mmol/L) |
TG (mmol/L) |
HDL (mmol/L) |
LDL (mmol/L) |
|
|---|---|---|---|---|---|---|---|---|---|
| Total sleep time, min | 0.029 | 0.046 | 0.036 | 0.006 | 0.001 | −0.048 | 0.019 | −0.096** | −0.074* |
| SWS, % of TST | −0.048 | −0.069* | 0.052 | −0.007 | 0.024 | −0.016 | −0.032 | 0.014 | 0.023 |
| REM, % of TST | −0.034 | −0.040 | −0.082** | 0.068* | 0.071* | −0.006 | −0.067* | 0.021 | 0.012 |
| Sleep efficiency, % | 0.026 | 0.045 | 0.006 | −0.012 | −0.032 | −0.037 | 0.015 | −0.065* | −0.050 |
| MAI | 0.041 | 0.010 | 0.051 | −0.020 | −0.017 | 0.078* | 0.032 | 0.029 | 0.134** |
OSA, obstructive sleep apnea; BMI, body mass index; SBP, systolic blood pressure; DBP, diastolic blood pressure; TC, total cholesterol; TG, triglyceride; HDL-C, high-density lipoprotein cholesterol; LDL-C, low-density lipoprotein cholesterol; SWS, slow-wave sleep; TST, total sleep time; REM, rapid eye movement; MAI, microarousal index.
**
significant at the 0.01 level.
*
significant at the 0.05 level.