Table 2 Clinicopathologic characteristics in serum samples of patients with CRC and healthy control
| Â | Characteristic | CRC | Polyps | Controls |
|---|---|---|---|---|
Series 1 |  | n = 9 | n = 10 | n = 30 |
| Â | Sex | Â | Â | Â |
|  |  Male | 3 | 6 | 15 |
|  |  Female | 6 | 4 | 15 |
| Â | Age | Â | Â | Â |
|  |  Mean ± SD | 66.1 ± 17.2 | 71.5 ± 11.8 | 62. 1 ± 17.3 |
|  |  Range | 36-94 | 56-91 | 22-91 |
| Â | Stage | Â | Â | Â |
|  |  I/II | 4 (1/3) | Na | Na |
|  |  III/IV | 5 (1/4) | Na | Na |
Series 2 |  | n = 23 | n = 16 | n = 131 |
| Â | Sex | Â | Â | Â |
| Â | Male | 18 | 10 | 71 |
| Â | Female | 5 | 6 | 60 |
| Â | Age | Â | Â | Â |
|  |  Mean ± SD | 68.6 ± 11.2 | 61.8 ± 9.2 | 58.5 ± 16.3 |
|  |  Range | 51-84 | 52-85 | 18-94 |
| Â | Stage | Â | Â | Â |
|  |  I/II | 2 (1/1) | Na | Na |
|  |  III/IV | 21 (6/15) | Na | Na |
Series 1 + 2 pooled |  | n = 32 | n =26 | n = 161 |
| Â | Sex | Â | Â | Â |
|  |  Male | 21 | 16 | 86 |
|  |  Female | 11 | 10 | 75 |
| Â | Age | Â | Â | Â |
|  |  Mean ± SD | 67.9 ± 12.9 | 65.5 ± 11.1 | 59.1 ± 16.5 |
|  |  Range | 36-94 | 52-91 | 18-94 |
| Â | Stage | Â | Â | Â |
|  |  I/II | 6 (2/4) | Na | Na |
|  |  III/IV | 26 (7/19) | Na | Na |