Table 2 Polysomnographic and Demographic features
From: Distinct polysomnographic and ECG-spectrographic phenotypes embedded within obstructive sleep apnea
Demographics and Polysomnogram Metrics | Summary statistic (972) Mean ± SD | Summary statistic (671) Mean ± SD |
|---|---|---|
Age | 50.8 ± 12.9 | 50.2 ± 12.7 years |
Gender | 65.3% male | 63.9% male |
Race | 70.2% white | 71.7% white |
Body Mass Index Kg/M2 | 31.8 ± 7.4 | 31 ± 7.1 |
Total sleep time (TST) | 379.4 ± 66.6 | 385.1 ± 60.3 |
Sleep efficiency (% TST) | 79 ± 12.6 | 80.1 ± 11.6% |
Wake After Sleep Onset (minutes) | 83.4 ± 51.8 | 78.3 ± 48.3 |
S1 (% TST) | 18.3 ± 14.6 | 17.3 ± 13.1 |
S2 (% TST) | 60.3 ± 13.4 | 60.9 ± 12.3 |
S3 (% TST) | 2.7 ± 4.9 | 2.7 ± 4.9 |
S4 (% TST) | 0.7 ± 2.4 | 0.7 ± 2.4 |
REM (% TST) | 17.9 ± 7.1 | 18.2 ± 6.8 |
Arousal Index/hour of sleep | 29 ± 21.7 | 27.6 ± 20.8 |
RDI/hour of sleep | 38.8 ± 27.1 | 36.4 ± 26.1 |
Obstructive apnea index/hour of sleep | 16.9 ± 21.9 | 15.2 ± 20.2 |
Central apnea index/hour of sleep | 1.1 ± 4.6 | 1.1 ± 4.9 (Median 0.1, 25th/75th percentile 0. 0.1) |
Mixed apnea index/hour of sleep | 1.5 ± 5.6 | 1.3 ± 4.8 |
Hypopnea index/hour of sleep | 19.3 ± 13.2 | 18.9 ± 13 |
RDI-NREM/hour of sleep | 37.4 ± 28.9 | 34.9 ± 27.9 |
RDI-REM/hour of sleep | 43.2 ± 26.6 | 42.1 ± 26.5 |
Oxygen desaturation index/hour of sleep | 25.5 ± 25.6 | 22.7 ± 24 |
Minimum saturation % | 81 ± 9.1 | 81.7 ± 8.4 |
Time less than 85% saturation (minutes) | 2.9 ± 8.2 | 2.4 ± 7.5 |
PLM/hour of sleep | 6.4 ± 15.4 | 6 ± 15 |