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Table 2 Risk factors associated with long term urinary toxicity (Univariate analysis)

From: Urinary function and quality of life after radiotherapy for prostate cancer in patients with prior history of surgical treatment for benign prostatic hyperplasia

  IPSS ≤7 IPSS > 7 p QOL < 3 QOL ≥3 p CTCAE Grade < 2 CTCAE Grade ≥ 2 p
Initial prostate volume (g) 56 71 0.06 58 64 0.24 60 36 0.08
Resected prostate Volume (g) 28 24 0.3 26 30 0.2 27 16 0.1
CTV prostate (cc) 45 61 0.07 50 59 0.1 53 37 0.08
V70Gy (cc) 34 37 0.2 35 36 0.4 34 40 0.2
TURP-RT time interval (days) 312 398 0.2 312 382 0.2 306 614 0.05
Total dose of radiotherapy (Gy) 78.3 78.7 0,3 78 79.4 0.04 78.4 79 0.3
Hypertension
 No 24 3 0.5 21 6 0.04 27 0 0.05
 Yes 20 10   21 9   27 4  
TURP indication
 Unknown 5 0 0.1 4 1 0.1 5 0 0.8
 Urinary symptoms 28 10   26 12   36 3  
 Urinary retention 10 1   11 0   10 1  
  High prostate volume 2 2   2 2   4 0  
Androgen deprivation therapy
 No 23 9 0.2 25 6 0.2 29 3 0.3
 Yes 22 4   18 9   26 1  
  1. IPSS International prostate symptom score, QOL urinary quality of life, CTCAE (Common Terminology Criteria for Adverse Events) version 4 grading system, TURP transurethral resection of the prostate