Table 2.
Polysomnographic data while on NPD or CAPD (n = 38)
| On NPD | On CAPD | P | |
|---|---|---|---|
| Total sleep time (h) | 5.0 ± 1.60 | 5.55 ± 1.41 | NS |
| Sleep efficiencya | 57.4 ± 14.4 | 62.8 ± 12.7 | NS |
| Stage of sleep (% of total sleep time) | |||
| rapid eye movement | 18.2 ± 10.5 | 16.7 ± 8.6 | NS |
| stage 1, 2 | 78.8 ± 22.1 | 79.3 ± 20.0 | NS |
| slow wave (stage 3, 4) | 1.9 ± 3.2 | 4.0 ± 3.6 | NS |
| AHI (no./h) | 9.6 ± 2.74 | 21.5 ± 4.15 | <0.001 |
| subjects with AHI > 15 (n, %) | 8 (21.1%) | 16 (42.1%) | 0.008 |
| subjects with AHI > 10 (n, %) | 10 (26.3%) | 19 (50%) | 0.004 |
| subjects with AHI > 5 (n, %) | 11 (28.9%) | 22 (57.9%) | 0.001 |
| Duration with oxygen saturation < 90% (min) | 64.3 ± 15.8 | 94.8 ± 20.5 | 0.025 |
| Arousals (no./h) | 16.6 ± 9.8 | 26.6 ± 16.4 | <0.001 |
| Periodic leg movement (no./h) | 0.5 ± 0.21 | 1.4 ± 0.35 | 0.007 |
a
Ratio of total sleep time to total time in bed. Data are presented as mean (± SD). AHI, apnea-hypopnea index (i.e., average number of episodes of apnea and hypopnea per hour of sleep).