Variables | Cases(n = 134) | Controls(n = 267) | P-value†|
---|---|---|---|
Age(yrs.): mean ± SD 1 | 49.5 ± 10.7 | 47.13 ± 10.1 | 0.03 |
Menarche age(yrs.): median (IQR) | 14.0 (2.00) | 13.0 (1.0) | 0.77 |
Marriage age(yrs.): median (IQR) | 19.0 (7.00) | 18.0 (4.0) | 0.07 |
First pregnancy age(yrs.): median (IQR) | 20.0 (8.5) | 19.0 (5.0) | 0.04 |
BMI (kg/cm2): median (IQR) | 29.5(7.3) | 28.5(7.7) | 0.07 |
WHR: mean ± SD 1 | 0.9 ± 0.1 | 0.9 ± 0.1 | 0.61 |
Physical activity: median (IQR) (MET-h/day) | 32.1 (6.2) | 31.47 (6.1) | 0.70 |
Smoking (Present smoker): n (%) | 4(3.0) | 9(3.4) | 0.84 |
SES status (% high) | 82 (63.1) | 154 (57.9) | 0.53 |
Breastfeeding time(month): median (IQR) | (53.0)36.0 | 44.0 (47.3) | 0.13 |
Menopausal status: n (%) | Â | Â | 0.04 |
 pre-menopause  post-menopause | 62(46.3) 72(53.7) | 153(57.3) 114(42.7) |  |
Marital status: n (%) | Â | Â | 0.73 |
 Single  Married  Divorced  Widowed | 9 (6.8%) 105 (78.9%) 5 (3.8%) 14 (10.5%) | 16 (6.0%) 206 (77.4%) 13 (4.9%) 31 (11.7%) |  |
Medical history | Â | Â | Â |
Breast cancer family history (YES): n (%) | 11(8.2) | 12(4.5) | 0.134 |
Cancer family history (YES): n (%) | 41(30.6) | 55(20.7) | 0.03 |
Benign breast diseases history (YES): n (%) | 12(9.0) | 14(5.3) | 0.157 |
Inflammatory disease history (YES): n (%) | 15(10.4) | 35(13.2) | 0.435 |
Abortion history (YES): n (%) | 52(38.8) | 78(29.2) | 0.053 |
OCP use time(yrs.): median (IQR) | 1.0 (5.0) | 1.00 (5.00) | 0.819 |
Anti-inflammatory drugs (YES): n (%) | 10(7.5) | 46(17.3) | 0.01 |
HRT (YES): n (%) | 7(5.2) | 29(10.9) | 0.061 |
Dietary intakes | Â | Â | Â |
Daily energy intake(kcal/day): median (IQR) | 2467 (890) | 2549 (1068) | 0.07 |
Carbohydrate (% of energy) | 53.7 ± 6.6 | 54.2 ± 7.0 | 0.44 |
Protein (% of energy) | 36.0 ± 6.7 | 35.1 ± 6.7 | 0.10 |
Fat (% of energy) | 12.6 ± 2.0 | 13.0 ± 2.1 | 0.21 |
MIND score: mean ± SD 1 | 19.9 ± 5.0 | 21.0 ± 4.0 | 0.034 |
Vitamin D supplement (YES): n (%) | 20(4.9) | 65(24.4) | 0.03 |
Calcium supplement (YES): n (%) | 35 (26.1) | 73 (27.3) | 0.795 |
Iron supplement (YES): n (%) | 20 (14.9) | 45 (16.9) | 0.621 |
Folic acid supplement (YES): n (%) | 16 (11.9) | 30 (11.2) | 0.835 |
Omega-3 supplement (YES): n (%) | 8 (6.0) | 31 (11.6) | 0.072 |
Herbal drug (YES): n (%) | 26 (19.4) | 72 (27.1) | 0.093 |