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Demographic characteristics of the study subjects
| Category | Characteristics | Number | Age (years old), (mean ± SD) |
|---|---|---|---|
| Healthy controls | No breast disease | 78 | 51.0 ± 10.0 |
|
Breast cancer (N = 71) |
Ductal carcinoma in situ (DCIS) | 13 | 55.0 ± 9.1 |
| Breast cancer (lymph node negative) | 31 | 53.6 ± 8.6 | |
| Breast cancer (lymph node positive) | 27 | 54.4 ± 8.8 | |
| Gastric cancer | Gastric adenocarcinoma | 54 | 57.1 ± 8.5 |
