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Table 1 The patient characteristics

From: The prognostic significance of the postoperative prognostic nutritional index in patients with colorectal cancer

  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)
  1. CEA carcinoembryonic antigen, CA19-9 carbohydrate antigen 19–9, PNI prognostic nutritional index