Table 1.
The general characteristics of breast cancer patients and healthy controls from Taiwanese women blood donors
| Characteristics, n (%)a | Cases | Control | p-valueb |
|---|---|---|---|
| Age (yrs) | |||
| Mean | 53.3 | 38.7 | < 0.0001 |
| S.D. | 9.62 | 15.2 | |
| Body mass index (BMI, kg/m2) | 24.09 ± 4.2 | 21.66 ± 3.13 | < 0.0001 |
| Breastfeeding | |||
| Yes | 53 (42.7) | 33 (34) | 0.2794 |
| No | 71 (57.3) | 64 (66) | |
| High calorie intake | |||
| Yes | 34 (27.4) | 31 (32) | 0.2786 |
| No | 90 (72.6) | 66 (68) | |
| Cardiovascular disease/diabetes | |||
| Yes | 42 (33.9) | 15 (15.5) | 0.0019 |
| No | 82 (66.1) | 82 (84.5) | |
| Oral contraceptive pills usage | |||
| Yes | 31 (25) | 11 (11.3) | 0.0202 |
| No | 93 (75) | 86 (88.7) |
a. Cases: n = 124; controls: n = 97. The percentages were shown in the parentheses
b. Age and BMI were determined by two-sample t tests; breastfeeding, high calorie intake, cardiovascular disease/diabetes, and oral contraceptive drugs usage were determined by chi-square tests.