Table 2.
Characteristics of the study patients
| Characteristic | All patients (n = 352) | Patients without chemotherapy (group A) (n = 193) | Patients with chemotherapy (group B) (n = 159) | |||
|---|---|---|---|---|---|---|
| Value | % or range | Value | % or range | Value | % or range | |
| Male | 218 | 62 | 122 | 63 | 96 | 60 |
| Median age (years) | 63 | 30–86 | 64 | 30–86 | 62 | 36–84 |
| Primary tumor | ||||||
| Rectal cancer | 167 | 47 | 90 | 47 | 77 | 48 |
| T3 | 259 | 74 | 140 | 73 | 119 | 75 |
| T4 | 30 | 9 | 15 | 8 | 15 | 9 |
| Missing before imputation | 6 | 2 | ||||
| Positive lymph node | 205 | 58 | 110 | 57 | 92 | 58 |
| Missing before imputation | 6 | 2 | ||||
| Liver metastases | ||||||
| Synchronous | 172 | 49 | 55 | 29 | 117 | 74 |
| Median diameter (cm) | 3.5 | 0.5–18 | 3.5 | 0.9–15 | 3.4 | 0.5–18 |
| Missing before imputation | 5 | 1 | ||||
| Median no. of metastases | 2 | 1–10 | 1 | 1–8 | 3.0 | 1–10 |
| Missing before imputation | 2 | 1 | ||||
| Bilobar | 135 | 38 | 52 | 27 | 83 | 52 |
| Extrahepatic | 29 | 8 | 7 | 44 | 22 | 14 |
| Incomplete resection | 72 | 21 | 40 | 21 | 32 | 20 |
| Missing before imputation | 7 | 2 | ||||
| Overall survival (months) | 46 | 95% CI 39–53 | 43 | 95% CI 34–52 | 47 | 95% CI 33–61 |
| Disease-free survival (monthos) | 11 | 95% CI 9–13 | 14 | 95% CI 11–17 | 9 | 95% CI 7–11 |
CI confidence interval