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Table 5 Impact of patient-related and dose-volume-related factors on symptoms/problems in multivariate analysis

From: Self-assessed bowel toxicity after external beam radiotherapy for prostate cancer - predictive factors on irritative symptoms, incontinence and rectal bleeding

 

factor

time A

time B

time C

time D

  

HR [95%CI]/p-value/incidence with presence vs. absence of factor

painful bowel movements ≥rarely

R70≥25%

-

-

-

0.4 [0.2-0.9]

p = 0.03

27% vs. 45%

 

haemorrhoids

4.5 [1.6-12]

p < 0.01

53% vs. 20%

6.3 [1.3-30]

p = 0.02

77% vs. 43%

2.7 [1.0-7.4]

p = 0.05

59% vs. 34%

-

 

chronic renal failure

-

-

-

7.2 [1.4-36]

p = 0.02

75% vs. 29%

bloody stools ≥rarely

PTV≥300 cm3

-

-

-

8.2 [2.4-28]

p < 0.01

17% vs. 4%

 

R70≥25%

-

-

-

0.2 [0.1-0.6]

p < 0.01

11% vs. 23%

 

haemorrhoids

-

-

3.5 [1.0-12]

p < 0.05

24% vs. 8%

4.0 [1.2-13]

p = 0.02

29% vs. 12%

 

stroke in past history

-

-

-

7.2 [2.0-26]

p < 0.01

42% vs. 12%

moderate/big problem from:

     

bowel habits overall

R70≥25%

-

0.4 [0.2-0.9]

p = 0.03

26% vs. 52%

0.4 [0.2-1.0]

p < 0.05

15% vs. 32%

-

 

haemorrhoids

8.1 [2.5-26]

p < 0.01

29% vs. 5%

3.4 [1.0-11]

p < 0.05

62% vs. 28%

5.9 [2.1-17]

p < 0.01

53% vs. 15%

3.3 [1.1-10]

p = 0.04

29% vs. 12%

 

chronic renal failure

-

-

-

7.9 [1.9-33]

p < 0.01

50% vs. 12%

rectal urgency

R70≥25%

-

-

0.3 [0.1-0.6]

p < 0.01

13% vs. 35%

-

 

NHT

4.3 [1.5-12]

p < 0.01

11% vs. 3%

-

-

-

 

haemorrhoids

5.2 [1.5-12]

p = 0.03

18% vs. 5%

3.7 [1.2-12]

p = 0.03

62% vs. 30%

-

3.4 [1.1-10]

p = 0.03

29% vs. 12%

 

chronic renal failure

-

-

-

4.9 [1.1-22]

p = 0.04

28% vs. 12%

losing control of stools

age≥70 years

-

-

3.6 [1.0-12]

p < 0.05

11% vs. 3%

-

bloody stools

haemorrhoids

-

-

-

7.0 [1.2-39]

p = 0.03

12% vs. 2%