Table 6 |
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|
Hierarchic multiple regression analysis of demographic, medical, and psychological variables in relation to PSQI |
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|
Model 1 |
Model 2 |
Model 3 |
Model 4 |
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|
|
|
|
|
|||||
|
B |
P value |
B |
P value |
B |
P value |
B |
P value |
|
|
|
||||||||
|
Age (years) |
0.057 |
0.122 |
0.064 |
0.081 |
0.032 |
0.314 |
0.055 |
0.103 |
|
Gender (male) |
0.738 |
0.108 |
0.098 |
0.823 |
-0.228 |
0.575 |
-0.435 |
0.292 |
|
Years of education |
-0.583 |
0.011 |
-0.333 |
0.105 |
-0.266 |
0.181 |
-0.190 |
0.318 |
|
Student (yes) |
-1.261 |
0.083 |
0.587 |
0.365 |
-0.805 |
0.203 |
-0.455 |
0.449 |
|
Employment (yes) |
-1.068 |
0.078 |
-1.099 |
0.043 |
-0.638 |
0.225 |
-0.798 |
0.112 |
|
Married (yes) |
0.174 |
0.788 |
0.168 |
0.769 |
0.010 |
0.985 |
0.011 |
0.984 |
|
|
||||||||
|
ESR |
0.007 |
0.535 |
0.009 |
0.399 |
||||
|
CRP |
-0.005 |
0.941 |
-0.022 |
0.706 |
||||
|
Disease duration |
-0.055 |
0.230 |
-0.052 |
0.214 |
||||
|
Morning stiffness (minute) |
0.001 |
0.919 |
0.001 |
0.904 |
||||
|
Fingertip-to-floor distance (cm) |
-0.011 |
0.481 |
-0.009 |
0.531 |
||||
|
Overall assessment of health (VAS) |
0.029 |
0.760 |
-0.039 |
0.658 |
||||
|
Nocturnal pain (VAS) |
0.267 |
0.012 |
0.258 |
0.009 |
||||
|
Total back pain (VAS) |
0.133 |
0.302 |
0.168 |
0.159 |
||||
|
BASMI |
-0.222 |
0.100 |
-0.149 |
0.233 |
||||
|
BASDAI (VAS) |
0.456 |
0.005 |
0.210 |
0.168 |
||||
|
BASFI (VAS) |
-0.067 |
0.595 |
-0.157 |
0.184 |
||||
|
|
||||||||
|
SDS |
0.064 |
0.004 |
0.059 |
0.008 |
||||
|
SAS |
0.170 |
0.000 |
0.120 |
0.000 |
||||
|
|
||||||||
|
R2 (%) |
8.5 |
32.0 |
32.4 |
42.6 |
||||
|
Adjusted R2 (%) |
6.7 |
28.0 |
30.6 |
38.9 |
||||
|
|
||||||||
|
Model 1 F = 4.756; P = 0.000; Model 2 F = 8.176; P = 0.000; Model 3 F = 18.290; P = 0.000; Model 4 F = 11.507; P = 0.000. BASDAI, Bath Ankylosing Spondylitis Disease Activity Index; BASFI, Bath Ankylosing Spondylitis Functional Index; BASMI, Bath Ankylosing Spondylitis Metrology Index; CRP, C-reactive protein; ESR, erythrocyte sedimentation rate; 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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