Table 2

Association of life style risk factors with breast cancer

VariablesCase N (%)Controls N (%)Bivariate analysis
COR (95% CI)P value
Smoking
No227 (98.7)230 (100)1:00
Yes30 (0.0)1.01 (0.998 to 1.03)0.082
Alcohol intake
Non-drinker181 (78.7)164 (71.3)1:00
Drinker49 (21.3)66 (28.7)0.673 (0.439 to 1.03)0.068
Vegetable intake
Once a week or less166 (72.2)158 (68.7)1:00
More than once a week64 (27.8)72 (31.3)0.846 (0.567 to 1.26)0.414
Fruit intake
Once a week or less194 (84.3)210 (91.3)1:00
More than once a week36 (15.7)20 (8.7)1.95 (1.09 to 3.48)0.024
Meat
Once a week or less207 (90.0)218 (94.8)1:00
More than once a week23 (10.0)12 (5.2)2.02 (979 to 1.4.16)0.057
Milk take
Once a week or less189 (82.5)207 (90.8)1:00
More than once a week40 (15.7)21 (9.2)2.086 (1.19 to 3.67)0.011
Solid oil
No45 (19.6)114 (49.6)1:00
Yes185 (80.4)116 (50.4)4.04 (2.67 to 6.12)0.0001
Source of fuel
Electric54 (23.5)111 (48.3)1:00
Wood/animal dung88 (38.3)28 (12.2)6.46 (3.78 to 11.03)0.0001
Charcoal/kerosene3 (1.3)20 (8.7)0.308 (0.088 to 1.08)0.066
Combination85 (37.0)71 (30.9)2.46 (1.57 to 3.87)0.0001
Strenuous exercise
No exercise209 (90.9)203 (88.3)1:00
<5 hours per week6 (2.6)17 (7.4)0.343 (0.133 to 0.887)0.027
5 hours and above per week15 (6.5)10 (4.3)1.46 (0.640 to 3.32)0.370
Moderate exercise
No exercise173 (75.2)126 (54.8)1:00
<5 hours per week21 (9.1)67 (29.1)0.228 (0.133 to 0.392)0.0001
5 hours and above per week36 (157)37 (16.1)0.709 (0.424 to 1.18)0.188
  • Bivariate analysis using binary logistic regression. 1:00 is OR for reference/comparison group.

  • COR, crude OR.