EXHIBIT 2. Patient And Disease Characteristics Of The Study Population, Study Of Medicare Beneficiaries Treated For Prostate Cancer, Selected Years 2001-07.
| 2001 (%) |
2004 (%) |
2007 (%) |
||||
|---|---|---|---|---|---|---|
| Characteristic | 3D-CRT (n = 4,874) |
IMRT (n = 401) |
3D-CRT (n = 1,973) |
IMRT (n = 3,052) |
3D-CRT (n = 579) |
IMRT (n = 4,842) |
| AGE (YEARS) | ||||||
| 65-69 | 21 | 19 | 25 | 23** | 26 | 23**** |
| 70-74 | 38 | 41 | 34 | 37 | 33 | 36 |
| 75-79 | 31 | 30 | 27 | 29 | 26 | 28 |
| 80+ | 10 | 9 | 13 | 11 | 15 | 13 |
| RACE/ETHNLCITY | ||||||
| White | 85 | 89**** | 83 | 83** | 86 | 82** |
| African American | 9 | 3 | 11 | 10 | 9 | 10 |
| Other | 5 | 8 | 6 | 8 | 5 | 8 |
| SOCIOECONOMIC STATUS | ||||||
| Low | 54 | 65**** | 53 | 56** | 53 | 57 |
| Medium | 24 | 13 | 24 | 21 | 27 | 23 |
| High | 22 | 22 | 23 | 23 | 19 | 19 |
| NUMBER OF COMORBIDITIES | ||||||
| 0 | 66 | 68 | 64 | 66 | 59 | 61 |
| 1 | 23 | 21 | 23 | 23 | 25 | 25 |
| 2 or more | 11 | 10 | 13 | 12 | 16 | 14 |
| DISEASE CLASSIFICATION | ||||||
| Low risk | 57 | 55 | 25 | 32**** | 18 | 27**** |
| High risk | 43 | 45 | 75 | 68 | 82 | 73 |
SOURCE Authors’ analysis of linked Surveillance, Epidemiology, and End Results (SEER)-Medicare data. NOTES IMRT is intensity-modulated radiotherapy. 3D-CRT is three-dimensional conformal therapy. Chi-square tests were performed for all categorical variables. Percentages might not sum to 100 because of rounding.
**
p < 0.05
****
p < 0.001