| Sleep parameters | ESS | |
| Correlation coefficient | P value | |
| SE | 0.511 | 0.021* |
| Arousal I | 0.578 | 0.008* |
| Apnea | 0.900 | 0.001* |
| RDI | 0.854 | 0.001* |
| SPO2 | 0.810 | 0.001* |
| BMI | 0.674 | 0.001* |