Table 2 The roles of node-associated factors in predicting overall survival outcome for patients with ampullary carcinoma undergoing curative pancreaticoduodenectomy
From: The role of lymph nodes in predicting the prognosis of ampullary carcinoma after curative resection
Variables | No. of patients n (%) | Survival | Univariate analysis | Multivariate analysis | ||||
|---|---|---|---|---|---|---|---|---|
5-year (%) | Median (months) | Mean ± SD (months) | P value | Hazard ratio | 95 % CI | P value | ||
Nodal status | Â | Â | Â | Â | <0.001 | Â | Â | 0.036 |
 Negative | 122 (62.9) | 53.9 | 79.5 | 98.5 ± 7.9 |  | (Ref.) | – |  |
 Positive | 72 (37.1) | 20.3 | 28.5 | 53.4 ± 8.6 |  | 2.12 | 1.05–4.26 | |
THLN number | Â | Â | Â | Â | 0.037 | Â | Â | 0.028 |
 <14 | 148 (76.3) | 38.9 | 41.8 | 73.9 ± 6.9 |  | (Ref.) | – |  |
 ≥14 | 46 (23.7) | 56.9 | – | 109.9 ± 13.5 |  | 0.49 | 0.26–0.93 | |
Positive LN number | Â | Â | Â | Â | 0.004 | Â | Â | 0.938 |
 <2 | 150 (77.3) | 47.2 | 54.4 | 90.3 ± 7.2 |  | (Ref.) | – |  |
 ≥2 | 44 (22.7) | 25.4 | 25.7 | 58.3 ± 11.5 |  | 1.03 | 0.50–2.14 | |
LNR | Â | Â | Â | Â | <0.001 | Â | Â | 0.665 |
 <0.15 | 147 (75.8) | 50.3 | 71.8 | 94.6 ± 7.3 |  | (Ref.) | – |  |
 ≥0.15 | 47 (24.2) | 18.0 | 26.2 | 46.4 ± 8.6 |  | 1.20 | 0.53–2.75 | |