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Table 1 General characteristics for the breast cancer cases (n = 287) and control population (n = 547).

From: Association of common variants in mismatch repair genes and breast cancer susceptibility: a multigene study

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%) -  
  1. a Age of diagnosis for cases.
  2. b Age of control population at the time of diagnosis for the matched case.
  3. c cases versus control group.
  4. * Chi-Square P value [See Methods].