Table 1. Patient and Disease Characteristics.
| Total | Young | Older | P value | |
|---|---|---|---|---|
| Age-median and range (yrs) | 60.7 (18-92) | 51.7 (18-64) | 74.1 (65-92) | NA |
| <65 | 59.3% | |||
| >=65 | 40.7% | |||
| Gender | <0.01 | |||
| Female | 49.7% | 43.7% | 58.4% | |
| Male | 50.3% | 56.3% | 41.6% | |
| Race | 0.19 | |||
| White | 90.3% | 89.5% | 92.0% | |
| African American | 6.9% | 8.0% | 4.78% | |
| Diagnosis | ||||
| Breast | 27.3% | 34.4% | 17.1% | <0.01 |
| Genitourinary Tract | 19.2% | 11.6% | 30.4% | <0.01 |
| Lung | 12.0% | 9.5% | 15.8% | <0.01 |
| Brain & Peripheral Nervous System | 9.9% | 12.3% | 6.5% | <0.01 |
| Alimentary Tract | 8.1% | 6.7% | 10.1% | 0.07 |
| Hematologic | 8.1% | 10.3% | 4.9% | <0.0 |
| Head & Neck | 6.2% | 6.2% | 6.3% | 0.96 |
| Soft-Tissue Sarcoma | 3.3% | 4.5% | 1.6% | 0.02 |
| Bone & Cartilaginous | 1.6% | 1.9% | 1.4% | 0.56 |
| Skin | 1.5% | 0.4% | 3.3% | <0.01 |
| Gynecologic | 0.9% | 1.3% | 0.8% | 0.48 |
| Unknown Primary | 0.9% | 0.4% | 1.6% | 0.05 |
| Melanoma | 0.4% | 0.6% | 0.3% | 0.52 |
| RT characteristics | ||||
| Total Gy—median and range | 57.6 (30-168) | 57.2 (30-168) | 57.6 (30-161) | 0.95 |
| Total days treated—median and range | 28.0 (10-48) | 28.5 (10-42) | 28.0 (10-48) | 0.95 |