Table 4 Sleep stages among poor sleep quality COPD patients with different grades of severity
Sleep stages | Poor sleep quality COPD patients (n = 40) | |||||
|---|---|---|---|---|---|---|
Mild (n = 4 ) | Moderate (n = 18) | Severe (n = 14) | Very severe (n = 4) | Test of significance | ||
N1 | Min (mean ± SD) | 78.7 ± 25.5 | 87.3 ± 23.8 | 94.8 ± 29.01 | 70.0 ± 46.9 | F = 0.88 P = 0.41 |
% of TIB (mean ± SD) | 16.50 ± 6.24 | 18.11 ± 5.83 | 19.92 ± 6.00 | 14.75 ± 10.66 | F = 0.80 P = 0.49 | |
N2 | Min (mean ± SD) | 137.5 ± 17.09 | 118.6 ± 38.5 | 133.3 ± 21.2 | 147.0 ± 62.8 | F = 1.42 P = 0.37 |
% of TIB (mean ± SD) | 28.75 ± 3.77 | 24.83 ± 8.48 | 27.64 ± 4.60 | 30.75 ± 16.85 | F = 0.78 P = 0.51 | |
N3 | Min (mean ± SD) | 43.0 ± 15.6 | 43.6 ± 17.9 | 28.2 ± 19.8 | 21.0 ± 42.6 | F = 1.19 P = 0.31 |
% of TIB (mean ± SD) | 9.00 ± 4.24 | 8.50 ± 4.68 | 5.71 ± 4.77 | 4.50 ± 9.00 | F = 1.28 P = 0.29 | |
REM | Min (mean ± SD) | 28.0 ± 9.2 | 25.21 ± 20.4 | 7.3 ± 6.9 | 7.2 ± 15.0 | F= 3.92 P = 0.003 |
% of TIB (mean ± SD) | 5.75 ± 1.70 | 5.16 ± 5.57 | 1.46 ± 1.57 | 1.50 ± 3.00 | F = 2.89 P = 0.04 | |