Skip to main content
. 2014 Apr 16;15:130. doi: 10.1186/1471-2474-15-130

Table 2.

Multivariate regression of change in pain, function, and working capacity at the 6 month follow up (n = 103)

 
Bivariate
Multivariate
Covariate Correlation Partial correlation Explained variance F change Regression coefficient Coefficient’s significance
Pain relief: NASS pain (explained variance: 72.1%)
Constant
 
 
 
 
 
 
-8.114
0.269
NASS
Pain
Baseline
-0.595
-0.734
35.5%
53.570
-0.860
<0.001
NASS
Function
Change
0.508
0.464
14.8%
28.776
0.615
<0.001
NASS
Function
Baseline
0.052
0.509
13.8%
36.854
0.665
<0.001
HADS
Anxiety
Baseline
-0.109
-0.311
2.6%
7.243
-0.257
0.008
Sports
 
Baseline
0.149
0.197
1.5%
4.692
2.510
0.033
Working capacity
Baseline
0.328
0.253
1.5%
4.608
0.200
0.034
CSQ
Catastrophizing
Change
0.348
0.260
1.5%
4.378
0.232
0.039
Smoking
 
 
-0.125
-0.193
1.1%
3.519
-5.684
0.064
Functional improvement: SF-36 physical functioning (explained variance: 63.4%)
Constant
 
 
 
 
 
 
30.492
<0.001
HADS
Depression
Change
0.453
0.461
20.5%
24.976
0.361
<0.001
SF-36
Physical function
Baseline
-0.436
-0.689
19.3%
30.779
-0.622
<0.001
HADS
Depression
Baseline
0.028
0.368
12.2%
24.163
0.250
<0.001
SF-36
Bodily pain
Change
0.445
0.431
6.6%
14.929
0.303
<0.001
SF-36
Bodily pain
Baseline
-0.084
0.228
2.3%
5.356
0.202
0.023
Age
 
 
-0.148
-0.209
1.4%
3.475
-0.194
0.065
Sports
 
Baseline
-0.046
0.173
1.1%
2.822
1.756
0.096
Working capacity improvement (explained variance: 58.2%)
Constant
 
 
 
 
 
 
-0.358
 
Working capacity
 
Baseline
-0.526
-0.686
27.7%
37.166
-0.881
<0.001
NASS
Pain
Change
0.335
0.538
13.7%
22.493
0.400
<0.001
CSQ
Catastrophizing
Baseline
0.173
0.243
5.7%
10.142
0.186
0.002
Sports
 
Baseline
-0.054
-0.291
3.7%
7.848
-3.668
0.006
NASS
Pain
Baseline
-0.049
0.208
3.3%
6.195
0.186
0.015
SF-36
Physical function
Baseline
0.159
0.282
2.3%
4.600
0.227
0.035
Comorbidities     -0.063 -0.202 1.8% 3.863 -2.184 0.052

Legend: NASS: North American Spine Society cervical spine self-assessment instrument. CSQ: Coping Strategies Questionnaire. SF-36: Short Form 36. HADS: Hospital Anxiety and Depression Scale, Admission: baseline score, Change: Change of the score between baseline and follow-up.