Gastroenterology Research and Practice / 2017 / Article / Tab 1 / Research Article
Survival after Abdominoperineal and Sphincter-Preserving Resection in Nonmetastatic Rectal Cancer: A Population-Based Time-Trend and Propensity Score-Matched SEER Analysis Table 1 Patient characteristics.
Total APR CAA Patient characteristics Tumor stage (AJCC 6th ed.) Stage I 1106 (23.5%) 859 (22.0%) 247 (30.8%) < 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%) 12+ 2520 (53.6%) 2053 (52.7%) 467 (58.2%) Grading G1 338 (7.2%) 264 (6.8%) 74 (9.2%) 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%) < 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%) 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%) < 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%) Female 1728 (36.8%) 1421 (36.5%) 307 (38.3%) Ethnicity Caucasian 3940 (83.8%) 3275 (84.0%) 665 (82.9%) 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%) 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%) < 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)
