Table 1. Baseline characteristics and type of surgery.
Entire cohort (n=14,894) | Mastectomy and no reconstruction (n=9,250) | Mastectomy and immediate implant-based reconstruction (n=3,007) | Mastectomy and immediate autologous reconstruction (n=2,637) | P* | |||||
---|---|---|---|---|---|---|---|---|---|
N | Column % | N | Row % | N | Row % | N | Row % | ||
Age at diagnosis (years) | <0.001 | ||||||||
< 40 | 1122 | 7.5 | 453 | 40.4 | 405 | 36.1 | 264 | 23.5 | |
40-49 | 4378 | 29.4 | 2209 | 50.5 | 1203 | 27.5 | 966 | 22.1 | |
50-59 | 7378 | 49.5 | 4997 | 67.7 | 1162 | 15.8 | 1219 | 16.5 | |
60 and older | 2016 | 13.5 | 1591 | 78.9 | 237 | 11.8 | 188 | 9.3 | |
Year of mastectomy | <0.001 | ||||||||
1998 | 381 | 2.6 | 258 | 67.7 | 30 | 7.9 | 93 | 24.4 | |
1999 | 592 | 4.0 | 394 | 66.6 | 59 | 10.0 | 139 | 23.5 | |
2000 | 608 | 4.1 | 410 | 67.4 | 58 | 9.5 | 140 | 23.0 | |
2001 | 874 | 5.9 | 566 | 64.8 | 118 | 13.5 | 190 | 21.7 | |
2002 | 1362 | 9.1 | 935 | 68.7 | 190 | 14.0 | 237 | 17.4 | |
2003 | 1749 | 11.7 | 1166 | 66.7 | 328 | 18.8 | 255 | 14.6 | |
2004 | 1779 | 11.9 | 1088 | 61.2 | 321 | 18.0 | 370 | 20.8 | |
2005 | 1829 | 12.3 | 1109 | 60.6 | 385 | 21.1 | 335 | 18.3 | |
2006 | 2537 | 17.0 | 1547 | 61.0 | 592 | 23.3 | 398 | 15.7 | |
2007 | 3183 | 21.4 | 1777 | 55.8 | 926 | 29.1 | 480 | 15.1 | |
Relationship with employer | 0.26 | ||||||||
Employee | 8698 | 58.4 | 5372 | 61.8 | 1765 | 20.3 | 1561 | 18.0 | |
Spouse | 6177 | 41.5 | 3863 | 62.5 | 1238 | 20.0 | 1076 | 17.4 | |
Unknown | 19 | 0.1 | 15 | 79.0 | 4 | 21.1 | 0 | 0.0 | |
HMO or PPO with capitation | <0.001 | ||||||||
No | 12063 | 81.0 | 7506 | 62.2 | 2366 | 19.6 | 2191 | 18.2 | |
Yes | 2831 | 19.0 | 1744 | 61.6 | 641 | 22.6 | 446 | 15.8 | |
Region of country | <0.001 | ||||||||
Northeast | 1180 | 7.9 | 624 | 52.9 | 251 | 21.3 | 305 | 25.9 | |
North Central | 3802 | 25.5 | 2360 | 62.1 | 863 | 22.7 | 579 | 15.2 | |
South | 7234 | 48.6 | 4433 | 61.3 | 1321 | 18.3 | 1480 | 20.5 | |
West | 2456 | 16.5 | 1683 | 68.5 | 544 | 22.2 | 229 | 9.3 | |
Bilateral mastectomy | <0.001 | ||||||||
No | 13160 | 88.4 | 8625 | 65.5 | 2229 | 16.9 | 2306 | 17.5 | |
Yes | 1734 | 11.6 | 625 | 36.0 | 778 | 44.9 | 331 | 19.1 | |
Lymph node surgery | <0.001 | ||||||||
No | 2592 | 17.4 | 1277 | 49.3 | 721 | 27.8 | 594 | 22.9 | |
Yes | 12302 | 82.6 | 7973 | 64.8 | 2286 | 18.6 | 2043 | 16.6 | |
Chemotherapy | <0.001 | ||||||||
No | 7084 | 47.6 | 3846 | 54.3 | 1754 | 24.8 | 1484 | 21.0 | |
Before surgery | 1372 | 9.2 | 1026 | 74.8 | 164 | 12.0 | 182 | 13.3 | |
After surgery | 6438 | 43.2 | 4378 | 68.0 | 1089 | 16.9 | 971 | 15.1 | |
Radiation | <0.001 | ||||||||
No | 9675 | 65.0 | 5191 | 53.7 | 2459 | 25.4 | 2025 | 20.9 | |
Yes | 5219 | 35.0 | 4059 | 77.8 | 548 | 10.5 | 612 | 11.7 |
- chi-square test