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Characteristics of groups having grade 3 vs grade 0 rectal (GI) toxicity
| Grade 3 group | Grade 0 group | |
| Total Number | 6 | 6 |
| T-Stage (number) | ||
| T1c | 2 | 2 |
| T2a/b | 4 | 4 |
| Mean Age (yr) | 70.8 | 69.4 |
| Mean PSA (ng/dl) | 16.8 | 18.0 |
| Race (number) | ||
| AA | 2 | 2 |
| White | 4 | 4 |
| Fraction Size (number) | ||
| 180 cGy | 1 | 1 |
| 200 cGy | 5 | 5 |
| Technique (number) | ||
| 6-Field | 6 | 6 |
| Mean Dose (cGy) | 7170 | 7167 |
