Table 1 General characteristics for the breast cancer cases (n = 287) and control population (n = 547).
Characteristics | Cases n (%) | Controls n (%) | P value* |
|---|---|---|---|
Age a, b | |||
≤ 30 | 1 (0.3%) | 2 (0.4%) | 0.97 c |
31-49 | 66 (23.0%) | 119 (21.8%) | |
50-69 | 158 (55.1%) | 301 (55.0%) | |
≥ 70 | 62 (21.6%) | 125 (22.9%) | |
Missing | 0 | 0 | |
Smoking habits | |||
Never | 250 (87.4%) | 490 (91.6%) | 0.06 c |
Current | 36 (12.6%) | 45 (8.4%) | |
Missing | 1 | 12 | |
Alcohol habits | |||
Never | 219 (76.3%) | 441 (82.6%) | <0.001 c |
Social | 25 (8.7%) | 59 (11.0%) | |
Regular | 43 (15.0%) | 34 (6.4%) | |
Missing | 0 | 13 | |
Histological diagnosis | |||
Ductal carcinoma | 251 (87.4%) | - | |
Lobular carcinoma | 14 (4.9%) | - | - |
Non-classifiable as ductal or lobular carcinoma | 22 (7.7%) | - |