Table 1 The patient characteristics
Exploratory Group (n = 32) | Validation Group (n = 186) | |
|---|---|---|
Gender | ||
Male | 20 | 100 |
Female | 12 | 86 |
Age (years) | ||
Median (range) | 69 (42–86) | 67 (26–86) |
Location of primary tumor | ||
Colon | 16 | 94 |
Rectum | 16 | 92 |
Tumor depth | ||
≤T3 | 16 | 130 |
T4 | 16 | 56 |
Histological type | ||
Well, Moderately | 27 | 172 |
Poorly, Mucinous | 5 | 14 |
The number of lymph node metastases | ||
0 | 17 | 67 |
1-3 | 9 | 83 |
≥4 | 6 | 36 |
Preoperative CEA (ng/ml) | ||
≤5 | 14 | 126 |
>5 | 16 | 43 |
Preoperative CA19-9 (U/ml) | ||
≤37 | 13 | 155 |
>37 | 6 | 11 |
The amount of blood lost (ml) | ||
Median (range) | 245 (5–1780) | 97.5 (5–2700) |
Length of operation (min) | ||
Median (range) | 182 (76–437) | 206 (93–687) |
Complication(s) | ||
No | 24 | 123 |
Yes | 8 | 62 |
Regimen of adjuvant chemotherapy | ||
Monotherapy using an oral pro-drug based on 5-FU | 15 | 126 |
Combination therapy with 5-FU and oxaliplatin | 0 | 15 |
None | 17 | 45 |
Preoperative PNI | ||
Median (range) | 44.67 (31.76-60.24) | 47.90 (32.45-61.36) |
Postoperative PNI | ||
Median (range) | 50.16 (31.89-60.75) | 48.69 (32.62-66.96) |
The number of hospitalization days | ||
Median (Interquartile range) | 30 (25–39) | 17 (13–24) |
The number of postoperative days before the initiation of dietary intake (days) | ||
Median (Interquartile range) | 4 (3–6) | 3 (2–4) |
The number of days from operation to the first hospital visit | ||
Median (Interquartile range) | 31 (26–36) | 28 (22–35) |