Table 3.
Comparing characteristics of patients undergoing revision total hip arthroplasty between octogenarians and nonagenarians. Healthcare Cost and Utilization Project—Nationwide Inpatient Sample, 2010–2014.
| Octogenarians (n = 38,518) | Nonagenarians (n = 5606) | p Value | |
|---|---|---|---|
| Age (years), mean (SD) | 83.70 (2.65) | 90.70 (1.59) | - |
| Number of Chronic Conditions, mean (SD) | 6.00 (2.90) | 6.22 (2.87) | 0.016 |
| Number of Diagnoses, mean (SD) | 12.08 (5.41) | 13.05 (5.37) | < 0.001 |
| Number of Procedures, mean (SD) | 2.80 (1.82) | 2.96 (1.74) | < 0.001 * |
| % Female | 65.68 | 73.29 | < 0.001 |
| Race | 0.334 | ||
| % White | 91.89 | 92.23 | |
| % Black | 2.97 | 2.12 | |
| % Hispanic | 2.61 | 2.63 | |
| % Asian or Pacific Islander | 0.59 | 1.05 | |
| % Native American | 0.45 | 0.39 | |
| % Other | 1.49 | 1.59 | |
| Median Household Income (1 = lowest quartile, 4 = highest quartile) | 0.428 | ||
| % 1 | 20.17 | 19.97 | |
| % 2 | 25.84 | 26.65 | |
| % 3 | 27.60 | 25.47 | |
| % 4 | 26.39 | 27.91 | |
| Charlson Comorbidity Index | 0.202 | ||
| % 4 | 45.40 | 44.05 | |
| % 5 | 25.43 | 24.19 | |
| % 6+ | 29.16 | 31.76 |
* t-test performed on log-transformed data to meet the assumption of normality.