Table 3.
Percent of Men with Minimally Detectable Differences from their Baseline Expanded Prostate Cancer Index Composite (EPIC) Scores*
| EPIC Domain at Follow-up Periods | Proton Therapy | IMRT | P value† |
|---|---|---|---|
| Bowel Summery | |||
| 6 months | 25% | 39% | 0.002 |
| 1 year | 41% | 37% | 0.99 |
| 2 years | 37% | 38% | 0.99 |
| Urinary Incontinence | |||
| 6 months | 22% | 28% | 0.36 |
| 1 year | 31% | 29% | 0.99 |
| 2 years | 32% | 34% | 0.99 |
| Urinary Irritative/Obstructive | |||
| 6 months | 18% | 25% | 0.99 |
| 1 year | 23% | 20% | 0.99 |
| 2 year s | 17% | 18% | 0.99 |
| Sexual Summery | |||
| 6 months | 27% | 31% | 0.99 |
| 1 year | 36% | 36% | 0.99 |
| 2 years | 40% | 41% | 0.99 |
*
Great than 50% decline from baseline score
†
p value, Wilcoxon's rank sum test with Bonferonni adjustment