Table 3. Correlation of diastolic dysfunction with study parameters.
| Variable | r | P value |
|---|---|---|
| Gender (male) | 0.083 | 0.611 |
| Age (years) | 0.083 | 0.632 |
| BMI (kg/m2) | 0.212 | 0.269 |
| PaCO2 (mmHg) | 0.036 | 0.831 |
| PaO2 (mmHg) | −0.013 | 0.937 |
| FVC (% predicted) | 0.142 | 0.481 |
| FEV1 (% predicted) | 0.102 | 0.620 |
| AHI (events/hr) | 0.085 | 0.622 |
| AHI-NREM (events/hr) | 0.000 | 0.998 |
| AHI-REM (events/hr) | 0.224 | 0.253 |
| Sleep latency (mins) | −0.067 | 0.755 |
| WASO (mins) | −0.275 | 0.227 |
| Desaturation index (desaturations/hr) | 0.107 | 0.533 |
| Arousal index (arousals/hr) | 0.119 | 0.489 |
| Time with SpO2 <90% (mins) | 0.093 | 0.588 |
| Time with SpO2 <95% (mins) | 0.215 | 0.207 |
| Hypertension | −0.369 | 0.016 |
| Diabetes | 0.205 | 0.226 |
| Ischemic heart disease | 0.043 | 0.798 |
| Chronic kidney disease | −0.102 | 0.539 |
| Hypothyroidism | −0.431 | 0.010 |
PaCO2, partial pressure carbon dioxide; PaO2, partial pressure oxygen; FVC, forced vital capacity; FEV1, forced expiratory volume in first second; BMI, body mass index; AHI, apnea hypopnea index; REM, rapid eye movement; NREM, non-rapid eye, movement; WASO, wakefulness after sleep onset; SpO2, blood oxygen saturation; r, correlation coefficient.