TABLE 2.
Clinical data of the breast cancer group and control group (%)
| Breast cancer group (N = 60) | Control group (N = 240) | p | |
|---|---|---|---|
| Body mass index (mean ± SD) | 23.02 ± 3.92 | 23.02 ± 3.65 | 0.963 |
| Menarche age (mean ±SD) | 13.28 ± 1.59 | 12.98 ± 1.28 | 0.099 |
| Age of first delivery (mean ± SD) | 27.26 ± 3.77 | 27.34 ± 3.24 | 0.863 |
| Number of pregnancies | |||
| 0–1 times | 24 (40.0) | 98 (40.8) | 0.906 |
| ≥2 times | 36 (60.0) | 142 (59.2) | |
| Family history of breast cancer | |||
| Yes | 9 (15.0) | 16 (6.7) | 0.037 |
| No | 51 (85.00) | 224 (93.3) | |
χ² test was used to compare the differences in the number of pregnancies and the family history of breast cancer between the patient and control group. t‐test was used to compare the differences in body mass index, age of menarche, and age of first delivery between patient and control group.