Table 3. Associations between lifestyle factors and CHD risk.
| Lifestyle factors | Cases | Controls | χ2 | P value |
| Smoking | 3.699 | 0.0544 | ||
| Yes | 415 (92.2%) | 428 (95.3%) | ||
| No | 35 (7.8%) | 21 (4.7%) | ||
| Alcohol consumption | 7.796 | 0.005 | ||
| Yes | 83 (18.4%) | 53 (11.8%) | ||
| No | 367 (81.6%) | 397 (88.2%) | ||
| Tea drinking | 0.473 | 0.492 | ||
| Yes | 285 (36.7%) | 175 (38.9%) | ||
| No | 165 (63.3%) | 275 (61.1%) | ||
| High-salt diets | 20.564 | < 0.001 | ||
| Yes | 149 (33.1%) | 89 (19.8%) | ||
| No | 301 (66.9%) | 361 (80.2%) | ||
| Sweet diets | 0.013 | 0.909 | ||
| Yes | 43 (9.6%) | 42 (9.3%) | ||
| No | 407 (90.4%) | 408 (90.7%) | ||
| Oiliness diets | 0.0620 | 0.803 | ||
| Yes | 36 (8.0%) | 34 (7.6%) | ||
| No | 414 (92.9%) | 416 (92.4%) | ||
| Light diets | 21.501 | < 0.001 | ||
| Yes | 263 (58.4%) | 329 (73.1%) | ||
| No | 187 (41.6%) | 121 (26.9%) | ||
| Working strength | 9.667 | 0.008 | ||
| Mild | 253 (56.2%) | 218 (48.6%) | ||
| Moderate | 134 (29.8%) | 178 (39.6%) | ||
| Severe | 63 (14.0%) | 53 (11.8%) | ||
| Physical activity | 11.365 | 0.001 | ||
| Never | 193 (49.2%) | 149 (33.1%) | ||
| 1–2/week | 75 (16.7%) | 105 (23.3%) | ||
| 3–4/week | 25 (5.6%) | 24 (5.3%) | ||
| ≥ 5/week | 157 (34.9%) | 172 (38.2%) |
CHD: coronary heart disease.