Table 3.
Comparison of sleep parameters in the two conditions.
| Sham | Steam inhalation | p | |
|---|---|---|---|
| Bedtime (h : min) | 0 : 46 ± 0 : 51 | 0 : 45 ± 0 : 54 | 0.807 |
| Wake time (h : min) | 7 : 02 ± 0 : 38 | 6 : 59 ± 0 : 26 | 0.221 |
| SPT (min) | 380.1 ± 60.7 | 370.5 ± 63.5 | 0.221 |
| TST (min) | 348.0 ± 71.3 | 342.8 ± 66.9 | 0.311 |
| Sleep latency (min) | 20.2 ± 25.9 | 14.1 ± 22.5 | 0.600 |
| WASO (min) | 11.9 ± 10.7 | 13.6 ± 23.8 | 0.861 |
| Sleep efficiency (%) | 91.2 ± 8.5 | 92.4 ± 7.8 | 0.807 |
| Deep NREM (%) | 20.2 ± 6.4 | 22.2 ± 10.1 | 0.753 |
| Deep NREM latency (min) | 23.8 ± 16.9 | 17.7 ± 12.1 | 0.045 |
| REM latency (min) | 48.6 ± 22.8 | 67.2 ± 34.2 | 0.196 |
Values are expressed as means ± standard deviations. Comparisons are relative to the sham condition (Wilcoxon signed-rank test). SPT: sleep period time; TST: total sleep time; WASO: wake after sleep onset; REM: rapid eye movement; NREM: non-REM.