Table 3.
Separate and joint effects of education and occupation on central obesity – Four Provinces Study, China (2008/09)
|
Complete cases (N = 1921) |
Unadjusted |
Age group and parityadjusted |
Age group, parity and health behaviour2 adjusted |
Age group, parity, health behaviour and area of residence adjusted |
||||
|---|---|---|---|---|---|---|---|---|
| OR (95%CI) | P-value3 | OR (95%CI) | P-value3 | OR (95%CI) | P-value3 | OR (95%CI) | Pcpvalue3 | |
|
Separate effects1 | ||||||||
| Education level | ||||||||
| None |
1 |
|
1 |
|
1 |
|
1 |
|
| Any |
1.24 (1.02,1.50) |
0.03 |
1.27 (1.05, 1.55) |
0.02 |
1.19 (0.97, 1.45) |
0.09 |
0.96 (0.78, 1.20) |
0.7 |
| Occupational status |
|
|||||||
| Agricultural |
1 |
|
1 |
|
1 |
|
1 |
|
| Non-agricultural |
1.61 (1.33, 1.95) |
<0.001 |
1.59 (1.30, 1.94) |
<0.001 |
1.46 (1.19, 1.81) |
<0.001 |
1.11 (0.84, 1.45) |
0.4 |
|
Joint effects (Odds of obesity for occupational status [Non-agricultural vs. agricultural] within education levels) 3 | ||||||||
| Education level | ||||||||
| None |
2.28 (1.57, 3.31) |
<0.001 |
2.21 (1.52, 3.21) |
<0.001 |
2.10 (1.43, 3.07) |
<0.001 |
1.66 (1.11, 2.49) |
0.01 |
| Any |
1.33 (0.99, 1.78) |
0.06 |
1.25 (0.92, 1.70) |
0.1 |
1.15 (0.84, 1.57) |
0.4 |
0.84 (0.58, 1.20) |
0.3 |
| P for interaction4 | 0.02 | 0.02 | 0.02 | <0.01 | ||||
1 Odds ratios of obesity for education level [Any vs. None] and occupational status [Non-agricultural vs. agricultural].
2 Health behaviours included current alcohol consumption, smoking status, meat consumption and fruit and vegetable consumption.
3P-value for the Wald test.
4P-value for the LR test comparing the models with and without the interaction term between education and occupation.