Skip to Main Content
Table 1.

Selected characteristics of breast cancer cases and control women, Shanghai, China

CharacteristicCases, n = 378 (%)Controls, n = 1,070 (%)
Age (y)   
    35-39 14 (3.7) 13 (1.2) 
    40-44 99 (26.2) 470 (43.9) 
    45-50 80 (21.2) 219 (20.5) 
    50-59 56 (14.8) 124 (11.6) 
    >60
 
129 (34.1)
 
244 (22.8)
 
 Cases, n = 378 (age-adjusted %)* Controls, n = 1,070 (%) 
Education (years completed)   
    Elementary school or less 112 (20.2) 211 (19.7) 
    Middle school 236 (72.5) 827 (77.3) 
    College 30 (7.3) 31 (2.9) 
1° Family history of breast cancer 16 (4.3) 17 (1.6) 
Body mass index (kg/m2  
    ≤20 62 (16.7) 204 (19.1) 
    21-25 220 (60.8) 627 (58.6) 
    ≥26 96 (22.5) 239 (22.3) 
Spouse smoking: no. cigarettes/d   
    Nonsmoker 146 (35.6) 380 (35.5) 
    1-9 cigarettes 56 (16.6) 119 (11.1) 
    10-19 cigarettes 74 (21.1) 213 (19.9) 
    ≥20 cigarettes 102 (26.8) 358 (33.5) 
Physical activity   
    Light 89 (24.7) 195 (18.2) 
    Moderate 275 (71.8) 804 (75.1) 
    Heavy 14 (3.5) 71 (6.6) 
CharacteristicCases, n = 378 (%)Controls, n = 1,070 (%)
Age (y)   
    35-39 14 (3.7) 13 (1.2) 
    40-44 99 (26.2) 470 (43.9) 
    45-50 80 (21.2) 219 (20.5) 
    50-59 56 (14.8) 124 (11.6) 
    >60
 
129 (34.1)
 
244 (22.8)
 
 Cases, n = 378 (age-adjusted %)* Controls, n = 1,070 (%) 
Education (years completed)   
    Elementary school or less 112 (20.2) 211 (19.7) 
    Middle school 236 (72.5) 827 (77.3) 
    College 30 (7.3) 31 (2.9) 
1° Family history of breast cancer 16 (4.3) 17 (1.6) 
Body mass index (kg/m2  
    ≤20 62 (16.7) 204 (19.1) 
    21-25 220 (60.8) 627 (58.6) 
    ≥26 96 (22.5) 239 (22.3) 
Spouse smoking: no. cigarettes/d   
    Nonsmoker 146 (35.6) 380 (35.5) 
    1-9 cigarettes 56 (16.6) 119 (11.1) 
    10-19 cigarettes 74 (21.1) 213 (19.9) 
    ≥20 cigarettes 102 (26.8) 358 (33.5) 
Physical activity   
    Light 89 (24.7) 195 (18.2) 
    Moderate 275 (71.8) 804 (75.1) 
    Heavy 14 (3.5) 71 (6.6) 

NOTE: P value for age-adjusted model stratified by year of interview (1995-1996, 1997, 1998-1999, and 2000-2001), using conditional logistic regression.

*

Indirect age-adjusted percentages based on age distribution of the controls.

P < 0.05.

P < 0.01.

Close Modal

or Create an Account

Close Modal
Close Modal