Patient characteristics
| Characteristics | n=64 (%) |
|---|---|
| Age, years | Median 57 (ranging from 22 to 85) |
| Gender | |
| Male | 36 (56) |
| Female | 28 (44) |
| Differentiation | |
| Well and moderately differentiated | 33 (51) |
| Poorly and undifferentiated | 31 (49) |
| Distance from anal verge (cm) | |
| ≤5 | 36 (56) |
| 6-10 | 28 (44) |
| Initial CEA level (ng/mL) | |
| Median | 8.23 (1-52) |
| ≤5 | 38 (60) |
| >5 | 26 (40) |
| Initial Hb level (g/dL) | |
| Median | 11.7 (7.9-17.2) |
| <12 | 33 (51) |
| ≥12 | 31 (49) |
| Clinical stage | |
| T2 | 14 (22) |
| T3, T4 | 50 (78) |
| Lymph node involvement | |
| N- | 17 (27) |
| N + | 47 (73) |
| Interval from neoadjuvant treatment to operation (wk) | |
| Median | 8.8 (3-144) |
| <6 | 19 (29) |
| 6–8 | 37 (58) |
| >8 | 8 (13) |