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Table 5 Sexual functions following SBRT for prostate cancer: patient-reported responses to EPIC-26 questions 8A (ability to have an erection), 8B (ability to reach orgasm), 10 (reliability of erections) and 11 (ability to function sexually)

From: Potency preservation following stereotactic body radiation therapy for prostate cancer

  Start 3 6 9 12 18 24
Ability to have an erection
Very good-good 58.8% 51.6% 56.3% 43.7% 45.6% 41.8% 36.7%
Fair 34.0% 33.7% 26.4% 26.4% 25.6% 29.1% 31.1%
Poor, very poor and none 7.2% 14.7% 17.2% 29.9% 28.9% 29.1% 32.2%
p   <0.04 <0.140 <0.001 <0.001 <0.001 <0.001
Ability to reach orgasm
Very good-good 74.2% 56.8% 63.2% 51.7% 53.3% 53.2% 46.7%
Fair 18.6% 27.4% 18.4% 24.1% 24.4% 22.8% 25.6%
Poor, very poor and none 7.2% 15.8% 18.4% 24.1% 22.2% 24.1% 27.8%
p   <0.05 0.089 <0.003 <0.001 <0.001 <0.001
Reliability of erections
More than half-half the time 78.4% 66.3% 64.4% 55.2% 57.8% 54.4% 52.2%
Less than half the time 21.6% 33.7% 35.6% 44.8% 42.2% 45.6% 47.8%
p   <0.004 <0.003 <0.001 <0.001 <0.001 <0.001
Function sexually (overall)
Very good-good 63.9% 53.7% 52.9% 47.1% 47.8% 43.0% 40.0%
Fair 33.0% 29.5% 28.7% 24.1% 25.6% 24.1% 30.0%
Poor-very poor 3.1% 14.7% 16.1% 28.7% 26.7% 32.9% 30.0%
p   <0.003 <0.005 <0.001 <0.001 <0.001 <0.001
N= 97 95 87 87 90 79 90