Table 2.
Characteristics of patients and healthy controls
| Items | Patients |
Controls |
||
|---|---|---|---|---|
| n | constituent ratio, % | n | constituent ratio, % | |
| Age, years | ||||
| <40 | 14 | 23.0 | 12 | 24.0 |
| 40-55 | 30 | 49.2 | 26 | 52.0 |
| >55 | 17 | 27.9 | 12 | 24.0 |
| Menopausal status | ||||
| Premenopausal | 37 | 60.7 | 31 | 62.0 |
| Postmenopausal | 24 | 39.3 | 19 | 38.0 |
| Tumor type | ||||
| Invasive ductal | 24 | 39.3 | ||
| Medullary | 13 | 21.3 | ||
| Simplex | 12 | 19.7 | ||
| Other | 12 | 19.7 | ||
| Tumor size | ||||
| <2 cm | 23 | 37.7 | ||
| 2-5 cm | 25 | 41.0 | ||
| >5 cm | 13 | 21.3 | ||
| Stage | ||||
| II | 30 | 49.2 | ||
| III | 31 | 50.8 | ||
| ECOG score | ||||
| 0-1 | 42 | 68.9 | 41 | 82.0 |
| 2-3 | 19 | 31.1 | 9 | 18.0 |
| Education level | ||||
| Some high school or less | 19 | 31.1 | 14 | 28.0 |
| Graduated from high school | 27 | 44.3 | 23 | 46.0 |
| Some college or more | 15 | 24.6 | 13 | 26.0 |
| Social status | ||||
| Single/divorced/widowed | 19 | 31.1 | 35 | 70.0 |
| Married/living together | 42 | 68.9 | 15 | 30.0 |
| Income, RMB Yuan | ||||
| <2,000 | 13 | 21.3 | 11 | 22.0 |
| 2,000-4,000 | 30 | 49.2 | 29 | 58.0 |
| >4,000 | 18 | 29.5 | 10 | 20.0 |