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Table 1 Demographics, preoperative and pathological data

From: Risk of biochemical recurrence based on extent and location of positive surgical margins after robot-assisted laparoscopic radical prostatectomy

  Total Evaluated Lost to FU p-value
n = 530 c n = 77
Follow-up (months) - median (IQR)    92 (87–99) 47 (29–87)  
Preoperative data   
  Age (years) - median (IQR) 63 (58–68) 63 (59–68) 61 (56–66) 0.028
  Preoperative PSA - median (IQR) 6.4 (4.8–9.0 6.6 (4.9–9.0) 6.0 (4.7–9.2) 0.628
  cT stage   0.019
   T1 (a,b,c) 199 (38%) 175 (39%) 24 (31%)  
   T2a 106 (20%) 82 (18%) 24 (31%)  
   T2b 155 (29%) 136 (30%) 19 (25%)  
   T2c 52 (10%) 48 (11%) 4 (5%)  
   T3 11 (2%) 9 (2%) 2 (3%)  
   unknown 7 (1%) 3 (1%) 4 (5%)  
  D’Amico risk group   0.005
   low 225 (42%) 205 (45%) 20 (26%)  
   intermediary 196 (37%) 152 (34%) 44 (57%)  
   high 97 (18%) 85 (19%) 12 (16%)  
   unknown 12 (2%) 11 (2%) 1 (1%)  
  Nerve sparing   0.471
   unilateral 13 (2%) 12 (3%) 1 (1%)  
   bilateral 498 (94%) 429 (95%) 69 (90%)  
   unknown 19 (4%) 12 (3%) 7 (9%)  
Pathological results   
 Pathological Gleason Score   0.005
    ≤ 6 214 (40%) 171 (38%) 43 (56%)  
   3 + 4 178 (34%) 159 (35%) 19 (25%)  
   4 + 3 73 (14%) 64 (14%) 9 (12%)  
    ≥ 8 58 (11%) 55 (12%) 3 (4%)  
   unknown 7 (1%) 4 (1%) 3 (4%)  
  pT stage        0.004
   pT2 385 (73%) 321 (71%) 64 (83%)  
   pT3a 80 (15%) 75 (17%) 5 (6%)  
   pT3b 56 (11%) 52 (11%) 4 (5%)  
   pT4 2 (0%) 2 (0%) 0 (0%)  
   unknown 7 (2%) 3 (1%) 4 (5%)  
  Involvment of lymph nodes 13 (2%) 12 (3%) 1 (1%) 0.483
  Positive surgical margins   
   Apical        
    focal 53 (10%) 43 (9%) 10 (13%) 0.194
    extensive 19 (4%) 19 (4%) 0 (0%) 0.054
   Posterolateral        
    focal 44 (8%) 39 (9%) 5 (6%) 0.604
    extensive 20 (4%) 18 (4%) 2 (3%) 0.454
   Base        
    focal 26 (5%) 22 (5%) 4 (5%) 0.840
    extensive 7 (1%) 7 (2%) 0 (0%) na*
   Bladder neck        
    focal 3 (1%) 2 (0%) 1 (1%) na*
    extensive 0 (0%) 0 (0%) 0 (0%) na*
  1. *Not applicable, sample size too small