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Table 4 Description of the parameters of interest in the Overall population and in the long-term survivor population (>48 months and >72 months)

From: Additive value of pre-operative and one-month post-operative lymphocyte count for death-risk stratification in patients with resectable pancreatic cancer: a multicentric study

  Patients Characteristics Overall population (N =390) Long-term survivor (>48 months) (N =67) Long-term survivor (>72 months) (N =28)
N   N   N  
Conventional parameters Lymph Nodes ratio 380   67   28  
  < 0.2   279 (73 %)   59 (88 %)   27 (96 %)
  ≥ 0.2   104 (27 %)   8 (12 %)   1 (4 %)
Vascular invasion 361   65   28  
 No   242 (67 %)   51 (78 %)   23 (82 %)
 Yes   119 (33 %)   14 (22 %)   5 (18 %)
Adjuvant Chemotherapy— no. (%) 336   58   22  
 No   85 (25 %)   6 (10 %)   3 (14 %)
 Yes   251 (75 %)   52 (90 %)   19 (86 %)
Lymphopenia parameters Pre-operative lymphocyte count 390 1320 (150–8350) 67 1330 (390–3360) 28 1350 (560–2970)
Post-operative lymphocyte count 301 1410 (200–32000) 57 1600 (930–3620) 24 1589 (940–2976)
Pre-operative lymphocyte count 390   67   28  
  ≤ 1000   110 (28 %)   11 (16 %)   6 (21 %)
  > 1000   280 (72 %)   56 (84 %)   22 (79 %)
Post-operative lymphocyte count 299   57   24  
  ≤ 1000   65 (22 %)   3 (5 %)   1 (4 %)
  > 1000   236 (78 %)   54 (95 %)   23 (96 %)
Lymphocyte count pre and post combined 301   57   24  
  > 1000/>1000   182 (60 %)   46 (81 %)   18 (75 %)
  ≤ 1000/>1000   54 (18 %)   8 (14 %)   5 (21 %)
  > 1000/≤1000   37 (12 %)   2 (4 %)   1 (4 %)
  ≤ 1000/≤1000   28 (10 %)   1 (2 %)   0 (0 %)
  1. Abbreviations: Lymph Nodes Ratio (Number of positive lymph nodes/Total number of lymph nodes)