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Table 5 Comparison between true biochemical relapse vs bounce

From: Permanent 125I-seed prostate brachytherapy: early prostate specific antigen value as a predictor of PSA bounce occurrence

  Bounce True relapse p
N 71 14  
Delay    
   Mean (SD) 18.5 (9.0) 51.0 (22.3)  
   Median (range) 17.0 (3.6-50.2) 44.0 (15.6-89.6) < .0001
   P25-75 12.4-23.2 35.7-70.8  
PSA doubling time    
   Mean (SD) 14.8 (13.3) 15.9 (14.3)  
   Median (range) 11.5 (1.0-70.2) 12.0 (3.9-49.5) 0.995
   P25-75 6.5-18.6 6.9-15.6  
PSA velocity    
   Mean (SD) 0.2 (0.2) 0.2 (0.1)  
   Median (range) 0.1 (0.01-0.9) 0.1 (0.03-0.6) 0.424
   P25-75 0.1-0.2 0.1-0.2  
PSA nadir before increase    
   Mean (SD) 1.6 (1.2) 1.2 (0.9)  
   Median (range) 1.4 (0.02-6.6) 1.0 (0.04-3.0) 0.250
   P25-75 0.8-2.3 0.5-1.9  
Delay where nadir +0.2    
   Mean (SD) 18.5 (9.0) 31.5 (15.6)  
   Median (range) 17.0 (3.6-50.2) 27.8 (7.8-61.7) < .0001
   P25-75 12.4-23.2 19.6-38.5