|
a. Adjusted1 parameter
estimates for the 3 socioeconomic variables singly associated with HAQ
and WOMAC health outcomes scores. |
|
Variable |
HAQ2 (Range 0-3) |
WOMAC 2 Function (Range
0-68) |
WOMAC Pain (Range 0-20) |
WOMAC Total (Range 0-96) |
|
Educational
attainment, <12 yrs
|
0.14**[0.05,
0.24] |
4.07** [1.76,
6.37] |
0.90* [0.22,
1.58] |
5.19** [2.05,
8.34] |
|
Occupation,
NM4
|
0.03 [-0.06,
0.11] |
3.13** [0.95,
5.31] |
0.98** [0.34,
1.63] |
4.15** [1.17,
7.13] |
|
Poverty
Rate, Medium (12-25%)
|
0.09 [0, 0.19] |
2.41 [-0.04,
4.86] |
0.53 [-0.2,
1.25] |
3.24 [-0.09,
6.57] |
|
Poverty
Rate, High (≥25%) |
0.15* [0.01,
0.29] |
2.15 [-1.33,
5.63] |
0.65 [-0.38,
1.68] |
3.01 [-1.73,
7.75] |
| b Adjusted1 parameter
estimates for all 3 socioeconomic variables simultaneously associated
with HAQ and WOMAC health
outcomes scores |
|
Educational
attainment, <12 yrs
|
0.15** [0.05,
0.35] |
3.22* [0.73,
5.7] |
0.57 [-0.16,
1.3] |
4.01* [0.63,
7.4] |
|
Occupation,
NM4
|
-0.03 [-0.12,
0.07] |
2.01 [-0.33,
4.34] |
0.78* [0.09,
1.47] |
2.72 [-0.47,
5.91] |
|
Poverty
Rate, Medium (12-25%)
|
0.09 [-0.01,
0.19] |
2.31 [-0.12,
4.74] |
0.49 [-0.23,
1.21] |
3.09 [-0.21,
6.4] |
|
Poverty
Rate, High (≥25%) |
0.13 [-0.01,
0.27] |
1.80 [-1.66,
5.26] |
0.58 [-0.44,
1.61] |
2.56 [-2.16,
7.28] |
** p <0.01
* p<0.05.
1 All models are adjusted for age, gender, BMI, race, knee symptoms, comorbidity, occupational physical activity score.
2 HAQ= Health Assessment Questionnaire, n=708, WOMAC = Western Ontario and McMaster Universities Osteoarthritis Index, n=688.
3 Values are the β [95% confidence interval].
4 NM = non-managerial, physically demanding.