Table 1.
Demographics of 2,074 patients with diagnosis of AIN III.
| Characteristic | N (%) |
|---|---|
| Age at diagnosis of AIN III (median, IQR) | 52 years (44–61) |
| Sex | |
| Male | 1,250 (60.3%) |
| Female | 824 (39.7%) |
| Race | |
| White | 1,749 (84.3%) |
| Black | 244 (11.8%) |
| Other (Asian, American Indian) | 60 (2.9%) |
| Unknown | 21 (1.0%) |
| Marital status at diagnosis of AIN III | |
| Single (never married) | 978 (47.2%) |
| Married or domestic partner | 472 (22.8%) |
| Divorced, separated, or widowed | 270 (13.0%) |
| Unknown | 354 (17.1%) |
| Region of the United States | |
| Northeast | 163 (7.9%) |
| Midwest | 97 (4.7%) |
| South | 279 (13.5%) |
| West | 1,535 (74.0%) |
| Year of initial AIN III diagnosis | |
| Before 2006 | 329 (15.9%) |
| 2006 – 2008 | 536 (25.8%) |
| 2009 – 2011 | 648 (31.2%) |
| 2012 – 2014 | 561 (27.1%) |
| Surgery type for initial AIN III | |
| None | 589 (28.5%) |
| Ablative surgery | 295 (14.3%) |
| Excisional surgery | 1,147 (55.5%) |
| Surgery not otherwise specified or unknown | 37 (1.8%) |
| Reason for no surgery for initial AIN III | |
| Surgery performed | 1,514 (71.11%) |
| Not recommended | 538 (25.27%) |
| Contraindicated due to other conditions | 5 (0.23%) |
| Recommended, unknown why not performed | 29 (1.36%) |
| Patient refused | 10 (0.47%) |
| Recommended, unknown if performed | 21 (0.99%) |
| Unknown if surgery performed | 12 (0.56%) |
AIN: anal intraepithelial neoplasia; IQR: interquartile range