Table 4. Adjusted odds ratios (ORs) and 95%CIs for OSCC by dietary factors.
| Variables | Case–control comparisons | Case–case comparisons | ||||
|---|---|---|---|---|---|---|
| Controls | OSCC-UOF | OSCC-LOF | OSCC-LOF VS OSCC-UOF | |||
| n | n | OR (95%CI)a | n | OR (95%CI)a | OR (95%CI)a | |
| Red meat (per week) | ||||||
| <5times | 909 | 58 | 1.00 | 286 | 1.00 | 1.00 |
| ≥5times | 1001 | 61 | 0.97(0.66-1.43) | 292 | 0.83(0.68-1.01) | 0.92(0.61-1.39) |
| Domestic meat (per week) | ||||||
| <3times | 1473 | 102 | 1.00 | 492 | 1.00 | 1.00 |
| ≥3times | 437 | 17 | 0.58(0.34-0.98) | 86 | 0.62(0.48-0.80) | 1.03(0.58-1.82) |
| Fish (per week) | ||||||
| <3times | 772 | 67 | 1.00 | 303 | 1.00 | 1.00 |
| ≥3times | 1138 | 52 | 0.56(0.38-0.81) | 275 | 0.60(0.49-0.73) | 1.09(0.73-1.63) |
| Seafood (per week) | ||||||
| <3times | 1222 | 94 | 1.00 | 443 | 1.00 | 1.00 |
| ≥3times | 688 | 25 | 0.49(0.31-0.78) | 135 | 0.52(0.41-0.65) | 1.05(0.64-1.72) |
| Green-leafy vegetables (per day) | ||||||
| <1time | 78 | 22 | 1.00 | 98 | 1.00 | 1.00 |
| ≥1time | 1832 | 97 | 0.20(0.12-0.33) | 480 | 0.22(0.16-0.31) | 1.02(0.60-1.71) |
| Other vegetables (per day) | ||||||
| <1time | 112 | 25 | 1.00 | 122 | 1.00 | 1.00 |
| ≥1time | 1798 | 94 | 0.25(0.15-0.41) | 456 | 0.26(0.19-0.35) | 0.93(0.57-1.53) |
| Fruits (per week) | ||||||
| <3times | 746 | 82 | 1.00 | 383 | 1.00 | 1.00 |
| ≥3times | 1164 | 37 | 0.31(0.20-0.47) | 195 | 0.33(0.27-0.41) | 1.07(0.68-1.68) |
| Milk and dairy products (per week) | ||||||
| <1time | 1042 | 75 | 1.00 | 383 | 1.00 | 1.00 |
| ≥1time | 868 | 44 | 0.74(0.50-1.11) | 195 | 0.59(0.48-0.73) | 0.80(0.52-1.24) |
| Eggs (per week) | ||||||
| <5times | 1218 | 88 | 1.00 | 401 | 1.00 | 1.00 |
| ≥5times | 692 | 31 | 0.65(0.42-1.00) | 177 | 0.74(0.60-0.92) | 1.16(0.73-1.84) |
| Beans and soy products (per week) | ||||||
| <1time | 584 | 28 | 1.00 | 178 | 1.00 | 1.00 |
| ≥1time | 1326 | 91 | 1.42(0.91-2.21) | 400 | 0.91(0.73-1.12) | 0.63(0.40-1.01) |
| Pickled food (per week) | ||||||
| <1time | 1362 | 79 | 1.00 | 396 | 1.00 | 1.00 |
| ≥1time | 548 | 40 | 1.25(0.84-1.86) | 182 | 1.08(0.87-1.33) | 0.93(0.61-1.43) |
aAdjustment for age, gender, education level, residence, BMI, family history of cancer, tobacco smoking, alcohol drinking.