|
Covariables and expectations
|
Changes in WOMAC
|
Changes in SF-12
|
|---|
| |
Pain
|
Stiffness
|
Function
|
PCS
|
MCS
|
|---|
| |
β
|
p value
|
β
|
p value
|
β
|
p value
|
β
|
p value
|
β
|
p value
|
|---|
|
Baseline HRQoL
|
0.82
|
<0.0001
|
0.94
|
<0.0001
|
0.72
|
<0.0001
|
-0.75
|
<0.0001
|
-0.69
|
<0.0001
|
|
BMI
| | | | | | |
-0.25
|
0.0175
| | |
|
Joint
| | | | | | | | | | |
|
Knee
|
Ref.
|
—
|
Ref.
|
—
|
Ref.
|
—
| | | | |
|
Hip
|
4.16
|
0.0013
|
5.65
|
<0.0001
|
3.24
|
0.0207
| | | | |
|
Highest degree
| | | | | | | | | | |
|
Secondary education/ University
|
6.60
|
0.0011
| | | | |
3.91
|
0.0011
| | |
|
Primary education
|
3.09
|
0.0517
| | | | |
*Ref.
|
—
| | |
|
None
|
Ref.
|
—
| | | | | | | | |
|
Previous intervention
| | | | | | | | | | |
|
Yes
| | | | |
-3.91
|
0.0064
| | | | |
|
No
| | | | |
Ref.
|
—
| | | | |
|
Expectations
| | | | | | | | | | |
|
Pain Relief
| | | | | | | | | | |
|
Low
|
Ref.
|
—
|
Ref.
|
—
|
Ref.
|
—
| | |
Ref.
|
—
|
|
High
|
10.52
|
<0.0001
|
6.63
|
0.0079
|
11.14
|
<0.0001
| | |
4.96
|
0.0081
|
|
Very high
|
10.22
|
<0.0001
|
7.95
|
0.0009
|
11.99
|
<0.0001
| | |
6.97
|
<0.0001
|
|
Ability to walk
| | | | | | | | | | |
|
Low or High
|
Ref.
|
—
| | |
Ref.
|
—
|
Ref.
|
—
| | |
|
Very high
|
3.32
|
0.0370
| | |
3.78
|
0.0248
|
3.89
|
<0.0001
| | |
|
R
2
|
0.45
|
0.57
|
0.35
|
0.24
|
0.42
|
- Ref: reference group.
- *In this case there has been grouped the reference group (primary and none education).
- Baseline Score direction: WOMAC, higher scores indicating worse HRQoL; SF-12, higher scores indicating better HRQoL.
- BMI, Body Mass Index; WOMAC, Westen Ontario and McMaster Universities Osteoarthritis Index; SF-12, Short Form 12; PCS, physical component summary of the SF-12; MCS, mental component summary of the SF-12. Ref: reference group.
- Changes are calculated so that a positive value indicates improvement and a negative value, worsening in all questionnaires.
