Table 1.
Patient demographics and characteristics
| Characteristics | Breast conservation therapy |
Mastectomy (MAST) |
|||
|---|---|---|---|---|---|
| Partial mastectomy | Oncoplastic surgery | Mastectomy | Mastectomy with reconstruction | p-value | |
| Average age (years) | 61 | 57 | 62 | 52 | < 0.00001 |
| Diagnosis: number of patients (%) | |||||
| DCIS | 17,661 (22) | 1099 (19) | 8482 (13) | 9399 (20) | < 0.00001 |
| INV | 64,254 (78) | 4695 (81) | 54,594 (87) | 37,203 (80) | |
| Race: number (%) | |||||
| White | 59,903 (73) | 4331 (77) | 43,717 (69) | 35,804 (77) | < 0.00001 |
| Black/African American | 8695(11) | 676 (12) | 705(12) | 4019 (8.6) | |
| American Indian/Alaskan Native | 414 (0.5) | 4 (0.1) | 479 (0.8) | 89 (0.2) | |
| Asian/Pacific Islander | 3006 (4) | 246 (4) | 3905 (6) | 1986 (4) | |
| Native Hawaiian | |||||
| Not reported | 9897 (12) | 437 (7) | 75,496(12) | 4678()10 | |
| Hispanic-ethnicity (%) | |||||
| Not Hispanic | 62,526 (97) | 4774 (99) | 47,507 (97) | 37,789 (97) | < 0.00001 |
| Hispanic | 1573 (2.5) | 66 (1) | 1384 (3) | 912 (2.3) | |
| Unknown | 197 (0.3) | 8 (0.2) | 229 (0.5) | 70 (0.2) | |
| Smokers | 9670 (12) | 560 (10) | 8692 (14) | 5366 (12) | < 0.00001 |
| Diabetic | |||||
| No | 71,405 (87) | 5162 (89) | 53,287 (84) | 44,031 (94) | < 0.00001 |
| Insulin | 2951 (4) | 170 (3) | 3071 (5) | 648 (1.5) | |
| Non-insulin | 7559 (9) | 462 (8) | 6744 (11) | 1897 (4) | |
| Admission status (%)a | |||||
| Inpatient | 6177 (8) | 966 (17) | 33,889 (54) | 32,638 (70) | < 0.00001 |
| Outpatient | 75,738 (92) | 4828 (83) | 29,213 (46) | 13,964 (30) | |
a
Percentages taken from recorded data