Table 1.
Demographic and Clinical characteristics of the study population
| Characteristics | n = 599 (100) |
|---|---|
| Age (y) | |
| 1‐59 | 134 (22.4) |
| 60‐69 | 133 (22.2) |
| 70‐79 | 207 (34.6) |
| 80+ | 125 (20.9) |
| Year of diagnosis | |
| 1984‐1997 | 73 (12.2) |
| 1998‐2015 | 526 (87.8) |
| Gender | |
| Female | 221 (36.9) |
| Male | 378 (63.1) |
| Ethnicity | |
| White | 514 (85.8) |
| African‐American | 40 (6.7) |
| Others (American Indian, Asian/Pacific Islander/unknown) | 45 (7.5) |
| Geographic distribution | |
| Northeast | 105 (17.5) |
| Midwest | 79 (13.2) |
| South | 116 (19.4) |
| West | 299 (49.9) |
| Staging (Ann Arbor) | |
| 1 | 342 (57.1) |
| 2 | 257 (42.9) |
| Laterality | |
| Right | 252 (42.1) |
| Left | 312 (52.1) |
| Bilateral | 16 (2.7) |
| Unknown | 19 (3.2) |
| Sequence | |
| Only 1 primary tumor | 372 (62.1) |
| More than 1 primary tumors | 227 (37.9) |
| Treatment | |
| Chemotherapy only | 224 (37.4) |
| Surgery only | 129 (21.5) |
| Surgery plus chemotherapy | 100 (16.7) |
| No or unknown status | 146 (24.4) |
| Radiation | |
| Radiation (with or without chemo/surgery) | 46 (7.7) |
| Surgery plus chemotherapy plus radiation | 9 (1.5) |