Table 1.
Baseline characteristics of case and matched control subjects at baseline.
| Characteristic | Cases (n = 201) | Controls (n = 402) | p-Valuea |
|---|---|---|---|
| Mean age ± SD (years) | 58.6 ± 6.4 | 58.4 ± 6.6 | — |
| Body mass index (kg/m2) (%) | |||
| < 18.5 | 2.5 | 3.5 | 0.71 |
| 18.5–25 | 72.6 | 72.1 | |
| ≥ 25 | 24.9 | 24.4 | |
| Smoking status (%) | |||
| Never | 32.8 | 27.0 | 0.07 |
| Former | 32.8 | 32.3 | |
| Current | 34.4 | 40.7 | |
| Alcohol intake (≥ 1–2 times/week) (%) | 69.2 | 72.4 | 0.42 |
| Married (%) | 93.5 | 90.6 | 0.26 |
| Diet (%) | |||
| Green tea, daily | 81.1 | 80.4 | 0.97 |
| Miso soup, daily | 82.6 | 78.9 | 0.18 |
| Milk, daily | 44.3 | 42.8 | 0.63 |
| Green vegetables, daily | 38.3 | 28.1 | 0.07 |
| Fish (≥ 3–4 times/week) | 55.2 | 55.0 | 0.97 |
| Pork (≥ 3–4 times/week) | 27.9 | 27.6 | 0.28 |
a
p-Value for Mantel–Haenszel test with matched-pair strata.