|
Risk factor
|
OR (95% CI)
|
P
|
|---|
|
Race
| | |
|
Han (reference)
|
1.00
|
.
|
|
Minorities
|
1.55 (1.12–2.14)
|
0.008
|
|
Age
| | |
|
45–49 years (reference)
|
1.00
|
.
|
|
50–59 years
|
1.24 (0.77–1.98)
|
0.374
|
|
60–69 years
|
1.85 (1.17–2.92)
|
0.008
|
|
≥ 70 years
|
2.63 (1.66–4.17)
|
< 0.001
|
|
Education
| | |
|
High-school or above (reference)
|
1.00
|
.
|
|
Middle-school
|
1.88 (1.15–3.05)
|
0.011
|
|
Primary education
|
2.48 (1.55–3.98)
|
< 0.001
|
|
Literate
|
2.53 (1.57–4.07)
|
< 0.001
|
|
Illiterate
|
2.78(1.72–4.49)
|
< 0.001
|
|
Geographic region
| | |
|
East (reference)
|
1.00
|
.
|
|
North
|
1.52 (1.11–2.09)
|
0.010
|
|
Northeast
|
0.86 (0.52–1.40)
|
0.532
|
|
Northwest
|
1.71 (1.18–2.49)
|
0.005
|
|
South Central
|
1.02 (0.76–1.37)
|
0.885
|
|
Southwest
|
1.16 (0.85–1.56)
|
0.349
|
|
Smoking status
| | |
|
Non-smokers (reference)
|
1.00
|
.
|
|
Smokers
|
1.37 (1.11–1.68)
|
0.003
|
|
Type of cooking
| | |
|
Clean (reference)
|
1.00
|
.
|
|
Unclean
|
1.07 (0.86–1.32)
|
0.564
|
- These variables with a P < 0.05 in univariate comparison were included in the multivariate logistic regression analysis
- OR odds ratio, CI confidence interval
