Table 2.
T-tests WOMAC subscales by subgrouping factors
| |
Significance of t-test for each WOMAC subgroup factor and means for each subgroup |
||||
|---|---|---|---|---|---|
| |
Physical |
Pain |
Stiffness |
||
| Subgroup factor | Knee | Hip | Knee | Hip | |
| Age |
0.07 |
0.85 |
0.002 |
0.20 |
0.03 |
| Younger (<=70.88) |
18.80 |
5.72 |
4.69 |
2.39 |
2.02 |
| Older (>70.88) |
20.88 |
5.79 |
3.44 |
2.59 |
1.63 |
| Gender |
0.14 |
0.12 |
0.08 |
0.35 |
0.12 |
| Male |
19.11 |
5.49 |
3.72 |
2.44 |
1.68 |
| Female |
20.76 |
6.08 |
4.42 |
2.60 |
1.96 |
| Social Class |
<0.0005 |
<0.0005 |
0.04 |
0.006 |
0.17 |
| Higher |
17.86 |
5.23 |
3.72 |
2.35 |
1.71 |
| Lower |
23.04 |
6.73 |
4.59 |
2.80 |
1.96 |
| Townsend |
0.001 |
0.002 |
0.31 |
0.13 |
0.43 |
| Less Deprived |
18.14 |
5.26 |
3.88 |
2.41 |
1.76 |
| More Deprived |
21.97 |
6.42 |
4.29 |
2.66 |
1.90 |
| Employed |
<0.0005 |
0.007 |
0.22 |
0.004 |
0.41 |
| Paid work |
15.46 |
5.10 |
3.73 |
2.19 |
1.72 |
| Not paid work |
22.33 |
6.17 |
4.25 |
2.69 |
1.88 |
| Mood |
<0.0005 |
0.001 |
<0.0005 |
0.003 |
<0.0005 |
| No anxiety |
17.76 |
5.44 |
3.51 |
2.38 |
1.55 |
| Moderate/Extreme |
25.78 |
6.81 |
5.63 |
2.90 |
2.52 |
| BMI |
<0.0005 |
<0.0005 |
<0.0005 |
<0.0005 |
0.003 |
| <30 |
16.26 |
4.96 |
3.45 |
2.18 |
1.61 |
| >30 |
25.65 |
7.21 |
5.12 |
3.04 |
2.16 |
| Number of joints |
0.17 |
0.78 |
0.005 |
0.67 |
0.001 |
| 1 or 2 |
18.03 |
5.64 |
5.04 |
2.40 |
2.34 |
| 3 or 4 |
19.76 |
5.76 |
3.67 |
2.47 |
1.62 |
| Hip only v Knee only |
0.77 |
n/a |
n/a |
n/a |
n/a |
| Hip |
18.18 |
n/a |
n/a |
n/a |
n/a |
| Knee | 18.69 | n/a | n/a | n/a | n/a |
Key: Bold, significant t-test; a higher mean reflects a worse WOMAC score.