The Breast Journal / 2022 / Article / Tab 1 / Research Article
Survival Outcomes of Breast-Conserving Therapy versus Mastectomy in Early-Stage Breast Cancer, Including Centrally Located Breast Cancer: A SEER-Based Study Table 1 Comparison of baseline characteristics between BC patients undergoing BCT and mastectomy from 2000 to 2015.
Mastectomy BCT - valueN % N % Year < 0.001 2000–2003 11629 18.8% 21347 18.0% 2004–2007 13304 21.5% 26570 22.4% 2008–2015 37010 59.7% 70635 59.6% Age, years < 0.001 18–63 43013 69.4% 77456 65.3% 64–72 11678 18.9% 28108 23.7% 73–79 7252 11.7% 12988 11.0% Race < 0.001 White 48880 78.9% 97410 82.2% Black 6167 10.0% 11112 9.4% Others 6896 11.1% 10030 8.5% Histologic type < 0.001 IDC 56391 91.0% 110183 92.9% ILC 5552 9.0% 8369 7.1% Laterality 0.698 Left 31577 51.0% 60549 51.1% Right 30366 49.0% 58003 48.9% Grade < 0.001 I 10720 17.3% 30405 25.6% II 26520 42.8% 51602 43.5% III/IV 24703 39.9% 36545 30.8% T stage < 0.001 T1a 4283 6.9% 9494 8.0% T1b 9083 14.7% 28637 24.2% T1c 23164 37.4% 52213 44.0% T2 25413 41.0% 28208 23.8% N stage < 0.001 N0 42422 68.5% 92001 77.6% N1 15855 25.6% 21863 18.4% N2 2530 4.1% 3417 2.9% N3 1136 1.8% 1271 1.1% ER < 0.001 Negative 14117 22.8% 19820 16.7% Positive 47826 77.2% 98732 83.3% PR < 0.001 Negative 20801 33.6% 31423 26.5% Positive 41142 66.4% 87129 73.5% Chemotherapy < 0.001 No or unknown 33049 53.4% 68605 57.9% Yes 28894 46.6% 49947 42.1%
BCT, breast-conserving therapy; IDC, invasive ductal carcinoma; ILC, invasive lobular carcinoma; ER, estrogen receptor; PR, progesterone receptor.