Table 1.
Patient characteristics.
| Total | APR | CAA | P A | |
|---|---|---|---|---|
| N = 4,700 | N = 3,898 | N = 802 | ||
| Patient characteristics | ||||
|
| ||||
| Tumor stage (AJCC 6th ed.) | ||||
| Stage I | 1106 (23.5%) | 859 (22.0%) | 247 (30.8%) | <0.001A |
| Stage IIA | 1417 (30.1%) | 1185 (30.4%) | 232 (28.9%) | |
| Stage IIB | 160 (3.4%) | 150 (3.8%) | 10 (1.2%) | |
| Stage IIIA | 283 (6.0%) | 219 (5.6%) | 64 (8.0%) | |
| Stage IIIB | 1159 (24.7%) | 993 (25.5%) | 166 (20.7%) | |
| Stage IIIC | 575 (12.2%) | 492 (12.6%) | 83 (10.3%) | |
|
| ||||
| Retrieved regional lymph nodes | ||||
| <12 | 2180 (46.4%) | 1845 (47.3%) | 335 (41.8%) | 0.004A |
| 12+ | 2520 (53.6%) | 2053 (52.7%) | 467 (58.2%) | |
|
| ||||
| Grading | ||||
| G1 | 338 (7.2%) | 264 (6.8%) | 74 (9.2%) | 0.007A |
| G2 | 3307 (70.4%) | 2731 (70.1%) | 576 (71.8%) | |
| G3/4 | 686 (14.6%) | 581 (14.9%) | 105 (13.1%) | |
| Unknown | 369 (7.9%) | 322 (8.3%) | 47 (5.9%) | |
|
| ||||
| Radiation | ||||
| None | 1165 (24.8%) | 897 (23.0%) | 268 (33.4%) | <0.001A |
| Before surgery | 2953 (62.8%) | 2512 (64.4%) | 441 (55.0%) | |
| After surgery | 582 (12.4%) | 489 (12.5%) | 93 (11.6%) | |
|
| ||||
| Year of diagnosis | ||||
| 2005 | 744 (15.8%) | 620 (15.9%) | 124 (15.5%) | 0.070A |
| 2006 | 671 (14.3%) | 566 (14.5%) | 105 (13.1%) | |
| 2007 | 688 (14.6%) | 568 (14.6%) | 120 (15.0%) | |
| 2008 | 636 (13.5%) | 547 (14.0%) | 89 (11.1%) | |
| 2009 | 653 (13.9%) | 526 (13.5%) | 127 (15.8%) | |
| 2010 | 685 (14.6%) | 572 (14.7%) | 113 (14.1%) | |
| 2011 | 623 (13.3%) | 499 (12.8%) | 124 (15.5%) | |
|
| ||||
| Age | ||||
| <50 | 799 (17.0%) | 629 (16.1%) | 170 (21.2%) | <0.001A |
| 50–64 | 1854 (39.4%) | 1497 (38.4%) | 357 (44.5%) | |
| 65–79 | 1564 (33.3%) | 1342 (34.4%) | 222 (27.7%) | |
| 80+ | 483 (10.3%) | 430 (11.0%) | 53 (6.6%) | |
|
| ||||
| Gender | ||||
| Male | 2972 (63.2%) | 2477 (63.5%) | 495 (61.7%) | 0.329A |
| Female | 1728 (36.8%) | 1421 (36.5%) | 307 (38.3%) | |
|
| ||||
| Ethnicity | ||||
| Caucasian | 3940 (83.8%) | 3275 (84.0%) | 665 (82.9%) | 0.011A |
| African-American | 366 (7.8%) | 285 (7.3%) | 81 (10.1%) | |
| Other/unknown | 394 (8.4%) | 338 (8.7%) | 56 (7.0%) | |
| Marital status | ||||
| Married | 2822 (60.0%) | 2296 (58.9%) | 526 (65.6%) | 0.002A |
| Single/widowed | 1174 (25.0%) | 1003 (25.7%) | 171 (21.3%) | |
| Other/unknown | 704 (15.0%) | 599 (15.4%) | 105 (13.1%) | |
|
| ||||
| Outcome variables | ||||
|
| ||||
| Cause of death | ||||
| Alive | 3668 (78.0%) | 2988 (76.7%) | 680 (84.8%) | <0.001A |
| Dead from cancer | 714 (15.2%) | 631 (16.2%) | 83 (10.3%) | |
| Dead not from cancer | 318 (6.8%) | 279 (7.2%) | 39 (4.9%) | |
|
| ||||
| Follow-up | ||||
| Months | 35.5 (23.4) | 35.4 (23.4) | 36.3 (23.8) | 0.353B |
n (%) and mean (SD).
AChi-square test BMann–Whitney U test.