Table 2.
The spearman correlation of cystatin-C (Cys-C) and monocyte-to-high-density lipoprotein cholesterol ratio (MHR) with polysomnography (PSG) parameters.
| PSG-related parameters | Cys-C | MHR | ||
|---|---|---|---|---|
| R-squared | P value | R-squared | P value | |
| Sleep efficiency (%) | 0.034 | ns | 0.136 | ns |
| WASO (min) | 0.069 | ns | −0.102 | ns |
| Arousal index (times/hour) | 0.069 | ns | −0.161 | ns |
| N1 stage percentage (%) | 0.202 | * | 0.079 | ns |
| N2 stage percentage (%) | −0.098 | ns | 0.107 | ns |
| N3 stage percentage (%) | −0.0179 | ns | −0.123 | ns |
| AHI (times/hour) | 0.316 | *** | 0.347 | *** |
| minimum SpO2 (%) | −0.227 | * | −0.285 | ** |
| oxygen desaturation index (times/hour) | 0.291 | *** | 0.303 | *** |
| SIT90 (%) | 0.286 | ** | 0.245 | ** |
| SIT80 (%) | 0.216 | * | 0.262 | ** |
WASO, wake after sleep onset; AHI, apnea-hypopnea index; SIT, supine index time; ns, no statistical difference.
*
P < 0.05.
**
P < 0.01.
***
P < 0.001.