Table 3 Univariate analysis of factors associated with removal of at least 12 lymph nodes
Factor | Lymph node count | P b | |
|---|---|---|---|
<12 (n = 179) | ≥12 (n = 483) | ||
Gender | 0.171 | ||
Female | 79 (44) | 184 (38) | |
Male | 100 (56) | 299 (62) | |
Age | 0.125 | ||
<70 years | 161 (90) | 401 (83) | |
≥70 years | 18 (10) | 82 (17) | |
Cancer site | 0.225 | ||
Pancreas | 88 (49) | 300 (62) | |
Ampulla of Vater | 79 (44) | 157 (33) | |
Common bile duct | 12 (7) | 26 (5) | |
Comorbidities | 0.893 | ||
No | 90 (50) | 237 (49) | |
Yes | 89 (50) | 246 (51) | |
ASA class | 0.259 | ||
I or II | 134 (75) | 336 (70) | |
III or IV | 45 (25) | 147 (30) | |
Preoperative biliary drainage | 0.179 | ||
No | 107 (60) | 257 (53) | |
Yes | 72 (40) | 226 (47) | |
Body mass index | 0.006 | ||
<25 | 91 (51) | 314 (65) | |
≥25 | 88 (49) | 169 (35) | |
Tumor diameter | <0.001 | ||
<20 mm | 66 (37) | 101 (21) | |
≥20 mm | 113 (63) | 382 (79) | |
Lymph node metastases | 0.001 | ||
No | 111 (62) | 155 (32) | |
Yes | 68 (38) | 328 (68) | |
Pathologist | 0.767 | ||
Single | 159 (89) | 425 (88) | |
Various | 20 (11) | 58 (12) | |
Type of resectiona | 0.001 | ||
Pancreatoduodenectomy (PD) | 102 (57) | 362 (75) | |
Pylorus-reserving PD | 77 (43) | 121 (25) | |
Lymphadenectomy | 0.001 | ||
Standard | 156 (87) | 328 (68) | |
Radical | 23 (13) | 155 (32) | |