Table 1.
Demographics and PSG metrics for diagnostic and treatment PSGs
| n | 331 | |
| sex | 54% male | |
| age | 54 (16, 89) | |
| BMI | 31 (27, 35) | |
| ESS | 8 (5, 11) | |
| Time between studies (days) | 93 (47, 161) | |
| Dx | PAP | |
| Subj Lat (min) | 30 (15, 60) | 20 (15, 45) |
| Subj TST (min) | 360 (300, 420) | 360 (300, 420) |
| Subj # wakes | 3 (2, 5) | 3 (2, 5) |
| Subj WASO (min) | 20 (10, 60) | 20 (10, 45) |
| S-O Lat (min) | 15 (3, 34.4) | 10 (-3, 23.3) |
| S-O TST (min) | −34 (−91, 14) | −19 (−69, 36)* |
| S-O # wakes | −17 (−26, −10) | −16 (−23, −10) |
| S-O WASO (min) | −16 (−46, 5) | −22 (−49, −0) |
| TST (min) | 383 (345,417) | 374 (326,402) |
| Lat (min) | 5 (2,10) | 4 (1,10) |
| LPS (min) | 12 (4,27) | 13 (5,29) |
| REM Lat | 124 (84,205) | 104 (73,182) |
| N1% | 14 (10,23) | 12 (8,19) |
| N2% | 55 (48,62) | 52(45,62) |
| N3% | 12 (5,19) | 16 (8,24) |
| R% | 14 (9,19) | 16 (11,22) |
| Eff (%) | 88 (80,94) | 87 (78,93) |
| #30sW | 22 (14,30) | 20 (14,27) |
| #60sW | 11 (6,16) | 11 (7,16) |
| Sp AI (hr−1) | 3 (2,5) | 5 (3,7) |
| LMAI (hr−1) | 1 (0,4) | 2 (0,6) |
| PLMI (hr−1) | 4 (1,17) | 7 (1,24) |
| AHI (hr−1) | 13 (8,20) | 2 (1,4)* |
| AHI Supine | 17 (10,30) | 2 (1,5)* |
| AHI REM | 26 (12,44) | 2 (0,5)* |
| RDI (hr−1) | 27 (17,37) | 4 (2,7)* |
| O2 nadir REM | 85 (80,89) | 92 (89,94) |
| O2 nadir NR | 85 (82,88) | 90 (88,92) |
Median values, with 25-75% range shown in parentheses, separated by commas.
Significant differences using Kruskal-Wallis with Dunn's correction are given by.
AHI, apnea-hypopnea index; BMI, body mass index; Dx, diagnostic PSG; Eff, efficiency; ESS; Epworth Sleepiness Scale; Lat, latency; LMAI, limb movement arousal index; LPS, latency to persistent sleep; min, minutes; N1-N3, NREM stages of sleep; O2, oxygen; REM, rapid eye movement; PAP, positive airway pressure treatment PSG; PLMI, periodic limb movement index; S-O, subjective-objective difference; Sp AI, spontaneous arousals; subj, subjective; TST, total sleep time; WASO, wake after sleep onset; #30sW, number of wakes ≥30 seconds long; #60sW, number of wakes ≥60 seconds long.