Table 1 Summary of patient and clinical characteristics
| Â | COH plasma | COH serum | TCGA paired RNA-Seq | |||||
|---|---|---|---|---|---|---|---|---|
| Â | Training set | Test set | Test set | Test set | ||||
Characteristics | Breast cancer | Healthy control | Breast cancer | Healthy control | Breast cancer | Healthy control | Breast cancer | Healthy control |
Number of samples | 106 | 61 | 26 | 15 | 103 | 31 | 98 | 98 |
Age (years; median, range) | 53, 31–73 | 34, 21–40 | 54.5, 36–72 | 37, 21–40 | 52, 32–72 | 36, 18–49 | 56, 30–90 | 56, 30–90 |
Stage (number of patients) | Â | Â | Â | Â | Â | Â | Â | Â |
 I | 16 |  | 3 |  | 18 |  | 16 |  |
 II | 40 |  | 9 |  | 49 |  | 60 |  |
 III | 38 |  | 8 |  | 54 |  | 21 |  |
 IV | 11 |  | 6 |  | 19 |  | 1 |  |
Race (number of patients) | Â | Â | Â | Â | Â | Â | Â | Â |
 Asian | 14 |  | 3 |  | 14 |  | 1 | 1 |
 Black | 5 | 12 | 4 | 1 | 6 | 5 | 6 | 6 |
 White | 76 | 28 | 18 | 9 | 69 | 21 | 90 | 90 |
 Latino |  | 21 |  | 5 |  | 5 |  |  |
 Native |  |  |  |  | 1 |  |  |  |
 Other | 10 |  | 1 |  | 13 |  | 1 | 1 |