Table 1.
Cohort demographics.
| Characteristic | Case (n) | Ratio (%) |
|---|---|---|
| Gender | ||
| Male | 1038 | 62 |
| Female | 636 | 38 |
| Age | ||
| 18–40 | 49 | 2.9 |
| 40–60 | 321 | 19.2 |
| 60–80 | 1054 | 63.0 |
| 80- | 250 | 14.9 |
| Race | ||
| White | 1525 | 91.1 |
| Black | 92 | 5.5 |
| Asian or pacific islander | 57 | 3.4 |
| Grade | ||
| Grade 1–2 | 76 | 4.5 |
| Grade 3–4 | 1598 | 95.5 |
| Laterality | ||
| Left-origin of primary | 454 | 27.1 |
| Right-origin of primary | 456 | 27.2 |
| Bilateral | 18 | 1.1 |
| Not a paired site | 746 | 44.6 |
| Surgery | ||
| No | 343 | 20.5 |
| Yes | 1331 | 79.5 |
| Radiation | ||
| No | 457 | 27.3 |
| Yes | 1217 | 72.7 |
| Chemotherapy | ||
| No | 873 | 52.2 |
| Yes | 801 | 47.8 |
| Overall survival | ||
| Censored | 119 | 7.1 |
| Dead | 1555 | 92.9 |
| Disease-specific survival | ||
| Censored | 120 | 7.2 |
| Dead | 1553 | 92.8 |
| Year of diagnosis | ||
| 1975–1985 | 454 | 27.1 |
| 1985–1995 | 456 | 27.2 |
| 1995–2005 | 18 | 1.1 |
| 2005–2016 | 746 | 44.6 |