Table 7 |
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|
Stepwise multiple regression analysis of demographic, physiological, medical, and psychological variables in relation to PSQI |
||||||
|
Independent |
B |
Standardized coefficients |
t |
P |
R2(%) |
|
|
|
||||||
|
Predictors |
39.5 |
|||||
|
SDS |
0.059 |
0.170 |
2.884 |
0.004 |
||
|
SAS |
0.128 |
0.287 |
4.759 |
0.000 |
||
|
Nocturnal pain (VAS) |
0.235 |
0.191 |
2.511 |
0.013 |
||
|
Total back pain (VAS) |
0.210 |
0.157 |
2.027 |
0.044 |
||
|
|
||||||
|
PSQI, Pittsburgh Sleep Quality Index; SAS, Self-rating Anxiety Scale; SDS, Self-rating Depression Scale, VAS, visual analogue scale. |
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|
Li et al. Arthritis Research & Therapy 2012 14:R215 doi:10.1186/ar4054 |
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