Table 2.
Patient Demographics and Clinical Characteristics
| Demographic or Characteristic | Total Population of Patients (N = 499) | Final Study Sample (n = 61) | ||
|---|---|---|---|---|
| No. | % | No. | % | |
| Diagnosis | ||||
| Colon cancer | 321 | 64 | 48 | 79 |
| Rectal cancer | 106 | 21 | 13 | 21 |
| Missing or unknown | 72 | 14 | — | — |
| Stage | ||||
| I | 4 | 1 | — | — |
| II | 19 | 4 | 11 | 18 |
| III | 65 | 13 | 50 | 82 |
| IV | 278 | 56 | — | — |
| Missing or unknown | 133 | 27 | — | — |
| Sex | ||||
| Female | 216 | 43 | 31 | 51 |
| Male | 199 | 40 | 30 | 49 |
| Missing or unknown | 84 | 17 | ||
| Race/ethnicity | ||||
| Native American | 8 | 2 | 2 | 3 |
| Asian | 3 | 1 | — | — |
| African American | 86 | 17 | 16 | 26 |
| White | 271 | 54 | 41 | 67 |
| Missing or unknown | 131 | 26 | 2 | 3 |
| Age at diagnosis, years | ||||
| > 79 | 27 | 5 | — | — |
| Mean | 61.1 | 59.8 | ||
| SD | 14 | 12 | ||
Abbreviation: SD, standard deviation.