Table 4: Descriptive characteristics of PSQI-SF-36 QOL scores and scales correlation.
PSQI - Subscales (0-21) |
Mean |
Min |
Max |
SD* |
|||||||||
1. Sleep quality |
1.2 |
0.0 |
3.0 |
0.9 |
|||||||||
2. Sleep latency |
1.4 |
0.0 |
3.0 |
0.9 |
|||||||||
3. Sleep duration |
0.6 |
0.0 |
3.0 |
0.8 |
|||||||||
4. Habitual sleep efficiency |
0.7 |
0.0 |
3.0 |
1.1 |
|||||||||
5. Sleep disturbance |
1.6 |
1.0 |
3.0 |
0.5 |
|||||||||
6. Use of sleeping medication |
0.0 |
0.0 |
1.0 |
0.1 |
|||||||||
7. Daytime dysfunction |
0.9 |
0.0 |
3.0 |
0.8 |
|||||||||
Global Score |
6.8 |
0.0 |
17 |
3.6 |
|||||||||
SF-36 QOL- Subscales (0-100) |
Mean |
Min |
Max |
SD |
|||||||||
1. Physical function |
36.9 |
0.0 |
66.7 |
14.6 |
|||||||||
2. Role difficulty (physical) |
21.6 |
0.0 |
62.5 |
20.5 |
|||||||||
3. Pain |
33.8 |
0.0 |
81.8 |
18.5 |
|||||||||
4. General health |
35.3 |
0.0 |
60.0 |
9.5 |
|||||||||
5. Vitality (energy) |
34.1 |
0.0 |
66.7 |
15.3 |
|||||||||
6. Social function |
34.6 |
0.0 |
80.0 |
14.7 |
|||||||||
7. Role difficulty (emotional) |
25.3 |
0.0 |
50.0 |
20.0 |
|||||||||
8. Mental health |
36.3 |
0.0 |
63.3 |
10.4 |
|||||||||
Global Score |
32.4 |
0.0 |
74.3 |
12.8 |
|||||||||
SF-36 QOL scale** |
|||||||||||||
|
|
Physical Function |
Role difficulty Physical |
Pain |
General health |
Vitality
|
Social Function |
Role difficulty Emotional |
Mental Health |
||||
PSQI |
r |
-0.322* |
-0.280* |
0.386* |
0.116 |
0.140* |
-0.098 |
-0.251* |
0.027 |
||||
p |
0.000 |
0.000 |
0.000 |
0.059 |
0.022 |
0.109 |
0.000 |
0.656 |
*SD; standard deviation; **Pearson correlation analysis, p < 0.05