Table 3.
Odds ratios (ORs) of CTC, CEA, and their combination to predict recurrent events. Data from patients with non-metastatic CRC are listed in (A), and data from patients with metastatic CRC are listed in (B). N/A: not analyzable due to absence of recurrent event.
| (A) | No. of Cases | Probability Ratio | |
| Disease stages 0–III | Recurrence (+) | Recurrence (−) | (odds ratio, OR) |
| CTC > 4 | 3 | 27 | 4.00 |
| CTC ≤ 4 | 1 | 36 | |
| CEA > 5 | 3 | 25 | 2.68 |
| CEA ≤ 5 | 3 | 67 | |
| CEA > 5; CTC > 4 | 2 | 6 | 7.16 |
| Others | 3 | 86 | |
| (B) | No. of Cases | Probability Ratio | |
| Disease stage IV | Recurrence (+) | Recurrence (−) | (odds ratio, OR) |
| CTC > 4 | 1 | 1 | N/A |
| CTC ≤ 4 | 0 | 7 | |
| CEA > 5 | 3 | 12 | N/A |
| CEA ≤ 5 | 0 | 3 | |
| CEA > 5; CTC > 4 | 1 | 1 | 4.66 |
| Others | 3 | 14 | |