Table 1 Pre- and post-operative characteristics of patients with absence or presence of lymph nodes in PAFP
| Â | LN absent in PAFP | LN present in PAFP | P-value |
|---|---|---|---|
(N = 7891) | (N = 909) | ||
Age, years: mean (SD) | 62.7 (7.5) | 62.9 (7.7) | 0.413 |
BMI, kg/m2 :mean (SD) | 27.9 (3.7) | 27.9 (4.2) | 0.814 |
PSA, ng/ml: mean (SD) | 8.84 (12.32) | 10.00 (24.62) | 0.107 |
Categorical PSA, ng/ml: % | Â | Â | 0.814 |
 0-3.9 | 20.0 | 22.0 |  |
 4-9.9 | 58.3 | 56.2 |  |
 10-20 | 15.1 | 14.0 |  |
 >20 | 6.7 | 7.8 |  |
Biopsy GS: % | Â | Â | <0.001 |
 6-7 | 82.8 | 78.3 |  |
 8-10 | 17.2 | 21.7 |  |
Pathologic GS: % | Â | Â | 0.307 |
 6-7 | 83.8 | 82.1 |  |
 8-10 | 16.7 | 17.9 |  |
Pathologic T stage: % | Â | Â | 0.659 |
 T2≥ | 67.5 | 66.8 |  |
 T3≤ | 32.5 | 33.2 |  |
Pathologic N stage: % | Â | 0.001 | |
 N0/Nx | 96.0 | 93.5 |  |
 N1 | 4.0 | 6.5 |  |
Margin status: % | Â | Â | <0.001 |
 Negative | 82.3 | 78.1 |  |
 Positive | 17.7 | 21.9 |  |