Table 2.
The odds ratios (95% confidence interval) of processed food consumption in modelsa
| Cases n (%) | Controls n (%) | P‐valueb | Crude odds ratio | Model 1 | Model 2 | Final model | |
|---|---|---|---|---|---|---|---|
| Intake frequency of preserved vegetable | |||||||
| <1 time/week | 89 (35.2) | 147 (58.1) | <0.01 | 1.00 | 1.00 | 1.00 | 1.00 |
| ≤3 time/week | 72 (28.5) | 80 (31.6) | 1.68 (1.05, 2.68) | 1.64 (0.93, 2.89) | 1.78 (1.02, 3.09) | 1.10 (0.55, 2.23) | |
| >3 time/week | 92 (36.4) | 26 (10.3) | 5.17 (3.05, 8.74) | 5.58 (2.95, 10.57) | 4.54 (2.49, 8.28) | 5.01 (2.07, 12.17) | |
| P for trend | <0.01 | ||||||
| Intake frequency of pickled vegetable | |||||||
| <1 time/week | 55 (21.7) | 55 (21.7) | >0.05 | 1.00 | 1.00 | 1.00 | 1.00 |
| <1 time/day | 29 (11.5) | 33 (13.0) | 0.84 (0.45, 1.59) | 0.86 (0.40, 1.88) | 0.95 (0.44, 2.04) | 1.18 (0.41, 3.43) | |
| ≥1 time/day | 169 (66.8) | 164 (65.2) | 1.03 (0.67, 1.57) | 1.07 (0.62, 1.85) | 1.03 (0.62, 1.71) | 0.66 (0.30, 1.43) | |
| P for trend | >0.05 | ||||||
| Intake frequency of salted meat | |||||||
| <1 time/month | 46 (18.2) | 66 (26.2) | <0.01 | 1.00 | 1.00 | 1.00 | 1.00 |
| <1 time/week | 81 (32.0) | 105 (41.7) | 1.11 (0.68, 1.80) | 1.02 (0.55, 1.92) | 1.31 (0.71, 2.43) | 1.79 (0.74, 4.33) | |
| ≥1 time/week | 126 (49.8) | 81 (32.1) | 2.21 (1.36, 3.61) | 2.25 (1.21, 4.18) | 2.85 (1.54, 5.27) | 2.57 (1.02, 6.43) | |
| P for trend | >0.05 | ||||||
a
Age, smoking and alcohol drinking are adjusted in model 1; total consumption of fruits and vegetables are adjusted in model 2; and in the final model, the other two processed foods, age, smoking, alcohol drinking, fruit and vegetable consumption, family esophageal cancer history and annual per capita income are adjusted.
b
Cochran–Armitage trend test.