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. Author manuscript; available in PMC: 2016 Jan 1.
Published in final edited form as: Urology. 2015 Jan;85(1):101–106. doi: 10.1016/j.urology.2014.08.044

Table 1.

Distribution-based Expanded Prostate Cancer Index Composite - Short Form (EPIC-26) standard deviation values corresponding to minimally important differences over time since primary prostate cancer treatment by domain*

EPIC-26 Domain Pre-treatment 1-year 2-year 3-year
⅓ SD ½ SD ⅓ SD ½ SD ⅓ SD ½ SD ⅓ SD ½ SD
Urinary Incontinence 4.3 6.4 7.0 10.5 7.0 10.5 7.0 10.5
Urinary Irritative/Obstructive 4.6 7.0 5.0 7.5 4.7 7.0 4.2 6.3
Bowel 2.9 4.4 4.7 7.0 4.7 7.1 4.2 6.4
Sexual 9.2 13.8 10.3 15.4 10.5 15.8 10.6 15.9
Hormonal 3.8 5.7 4.5 6.8 4.8 7.2 3.9 5.9
*

For the distribution-based approach, we calculated the mean and standard deviation (SD) of the EPIC-26 values for each domain at our selected time points since primary prostate cancer treatment, using these to calculate the ⅓ SD and ½ SD corresponding to minimally important difference (MID) values.