Table 3.
Comparison of Polysomnographic Findings Between Men and Women
| Parameter | Women (n= 20) | Men (n= 15) | p Value |
|---|---|---|---|
| AHI <5 n(%) | 0 | 1 (7) | 0.24 |
| AHI ≥5 n(%) | 20 (100) | 14 (93) | 0.25 |
| AHI ≥5 y <15, n(%) | 3 (15) | 4 (27) | 0.39 |
| AHI ≥15 y <30, n(%) | 4 (20) | 2 (13) | 0.60 |
| AHI ≥30, n(%) | 13 (65) | 8 (53) | 0.48 |
| Habitual snorer, n(%) | 20 (100) | 12 (80) | 0.03 |
| Candidate for CPAP, n(%) | 19 (95) | 12 (80) | 0.16 |
| Epworth score* | 10 (6 – 18) 2 - 22 | 10 (7 – 12) 2 - 24 | 0.54 |
| Sleep Efficiency (%)* | 86 (79 – 91) 62 - 95 | 88 (84 – 92) 57 - 98 | 0.30 |
| Latency to 1st stage (min)* | 18 (11 – 25) 4 - 59 | 16 (12 – 19) 0 - 25 | 0.31 |
| Latency to REM (min)* | 89 (84 – 128) 52 - 339 | 76 (67 – 128) 50 - 249 | 0.30 |
| Stage 1 (%)* | 15 (12 – 17) 5 - 28 | 13 (11 – 25) 3 - 52 | 0.94 |
| Stage 2 (%)* | 54 (46 – 59) 37 - 71 | 48 (47 – 56) 39 - 58 | 0.32 |
| Stage 3 (%)* | 16 (10 – 19) 8 - 31 | 16 (13 – 23) 1 - 26 | 0.66 |
| REM (%)* | 15 (13 – 19) 9 - 22 | 15 (13 – 18) 9 - 27 | 0.84 |
| Index of arousals* | 30 (24 – 38) 8 - 82 | 30 (16 – 59) 8 - 70 | 0.86 |
| Index of respiratory arousals * | 16 (5 – 22) 0 - 63 | 11 (5 – 53) 0 - 67 | 0.52 |
| AHI (events/hour)* | 33.4 (29 – 54.5) 11 - 108 | 39.4 (12 – 76) 3.3 – 87.5 | 0.96 |
| Daytime SpO2* | 94 (92 – 95) 86 - 96 | 93 (92 – 95) 88 - 96 | 0.53 |
| SpO2 while laying awake* | 92 (89 – 94) 82 - 95 | 93 (90 – 94) 90 - 96 | 0.37 |
| Average SpO2 during sleep* | 90 (86 – 92) 62 - 95 | 90 (87 – 93) 70 - 95 | 0.89 |
| REM SpO2* | 89 (86 – 91) 56 - 95 | 89 (84 – 93) 63 - 95 | 0.83 |
| NREM SpO2* | 90 (86 – 92) 69 - 95 | 90 (88 – 93) 75 - 94 | 0.97 |
AHI: apnea-hypopnea index, CPAP: continuous positive airway pressure, REM: rapid eye-movement sleep, NREM: non-rapid eye-movement sleep, Sp2: percentage of saturation by pulse oxymetry.
*
Mean (Interquartile interval) min. – max.