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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

 
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Radiation Oncology

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