Patient Demographics
| Variable | Same-Day Mastectomy Group, n=4,357 | 1-Day Length of Stay Group, n=18,285 | P Value |
|---|---|---|---|
| Age, years, mean | 54.0 | 57.9 | <0.01 |
| Sex | <0.01 | ||
| Male | 880 (20.2) | 357 (2.0) | |
| Female | 3,477 (79.8) | 17,928 (98.0) | |
| Race | <0.01 | ||
| White | 2,391 (54.9) | 13,621 (74.5) | |
| Black or African American | 313 (7.2) | 1,674 (9.2) | |
| Asian | 335 (7.7) | 921 (5.0) | |
| Unknown/Not reported | 1,263 (29.0) | 1,941 (10.6) | |
| Native Hawaiian or Pacific Islander | 45 (1.0) | 66 (0.4) | |
| American Indian or Alaska Native | 10 (0.2) | 62 (0.3) | |
| Comorbidities | |||
| Diabetes mellitus | 471 (10.8) | 2,172 (11.9) | 0.04 |
| Current smoker within 1 year | 550 (12.6) | 2,015 (11.0) | <0.01 |
| Dyspnea with moderate exercise or at rest | 150 (3.4) | 769 (4.2) | 0.02 |
| Chronic obstructive pulmonary disease | 95 (2.2) | 464 (2.5) | 0.17 |
| Congestive heart failure within 30 days | 11 (0.3) | 35 (0.2) | 0.42 |
| Hypertension requiring medication | 1,469 (33.7) | 6,924 (37.9) | <0.01 |
| Currently on dialysis | 11 (0.3) | 28 (0.2) | 0.16 |
| Disseminated cancer | 60 (1.4) | 269 (1.5) | 0.64 |
| Steroid use for chronic condition | 76 (1.7) | 417 (2.3) | 0.03 |
| >10% weight loss in <6 months | 15 (0.3) | 67 (0.4) | 0.83 |
| Bleeding disorders | 43 (1.0) | 219 (1.2) | 0.24 |
| Functional statusa | 0.02 | ||
| Independent | 4,306 (99.4) | 18,043 (99.1) | |
| Partially or totally dependent | 24 (0.6) | 165 (0.9) | |
| American Society of Anesthesiologists classificationb | <0.01 | ||
| 1 | 643 (14.8) | 868 (4.8) | |
| 2 | 2,369 (54.4) | 10,426 (57.1) | |
| 3 | 1,279 (29.4) | 6,737 (36.9) | |
| 4 | 59 (1.4) | 227 (1.2) | |