Table 3.
Patient characteristics after propensity score matching.
| Parameter | UKA | TKA | Significance |
|---|---|---|---|
| Total Surgeries (%) | 68,445 | 68,445 | - |
| Average Age (y) | 63.23 (Std d.10.6) | 63.28 (Std d.10.5) | p = 0.75 |
| Female (%) | 50.5 | 50.9 | p = 0.10 |
| Payer—Medicare (%) | 40.8 | 41.1 | p = 0.23 |
| Payer—Medicaid (%) | 5.1 | 5 | |
| Payer—Private (%) | 48.5 | 48.4 | |
| Payer—Other (including self-pay) (%) | 5.6 | 5.5 | |
| Hypertension Diagnosis (%) | 52.2 | 52.4 | p = 0.35 |
| Dyslipidemia Diagnosis (%) | 42.4 | 42.6 | p = 0.43 |
| Sleep Apnea Diagnosis (%) | 12.4 | 12.1 | p = 0.08 |
| Chronic Anemia (%) | 2.8 | 2.7 | p = 0.51 |
| Alcohol Abuse (%) | 0.8 | 0.8 | p = 0.77 |
| Osteoporosis (%) | 2.4 | 2.4 | p = 0.861 |
| Parkinson’s Disease (%) | 0.5 | 0.5 | p = 0.69 |
| Type 2 Diabetes (%) | 16.5 | 16.3 | p = 0.309 |
| Renal Disease (%) | 4.8 | 4.7 | p = 0.31 |
| CHF (%) | 0.7 | 0.6 | p = 0.06 |
| Chronic Lung Disease (%) | 4.4 | 4.3 | p = 0.236 |
| Obesity (%) | 25.5 | 25.2 | p = 0.29 |