Table 4.
Hospital characteristics for patients undergoing total hip replacement according to primary payer group.
| Characteristic | Medicare (%) | Medicaid (%) | Private Insurance (%) |
Other (%) | Uninsured (%) | Overall (%) | P-value |
|---|---|---|---|---|---|---|---|
| Hospital volume | <.0001 | ||||||
| First quartile | 41,465 (25.1) | 4,621 (45.4) | 23,439 (21.3) | 3,133 (39. 1) | 812 (35.3) | 73,470 (24.9) | |
| Second quartile | 42,078 (25.5) | 2,745 (27.0) | 26,831 (24.4) | 1,908 (23. 8) | 417 (18.1) | 73,979 (25.0) | |
| Third quartile | 42,376 (25.7) | 1,679 (16.5) | 27,950 (25.4) | 1,573 (19.6) | 502 (21.8) | 74,080 (25.1) | |
| Fourth quartile | 39,008 (23.7) | 1,125 (11.1) | 31,930 (29.0) | 1,409 (17.6) | 571 (24.8) | 74,043 (25.1) | |
| Core-based statistical listing designation | <.0001 | ||||||
| Non-CBSA | 3,253 (2.0) | 209 (2.1) | 1,884 (1.7) | 255 (3.2) | 50 (2.2) | 5,651 (1.9) | |
| Micropolitan Statistical Area | 8,846 (5.4) | 490 (4.8) | 4,702 (4.3) | 525 (6.5) | 110 (4.8) | 14,673 (5.0) | |
| Metropolitan Statistical Area | 152,281 (92.3) | 9,188 (90.3) | 103,083 (93.6) | 7,203 (89. 8) | 2,006 (87.1) | 273,761 (92.6) | |
| Missing | 547 (0.3) | 283 (2.8) | 481 (0.4) | 40 (0.5) | 136 (5.9) | 1,487 (0.5) |
Continuous variables analyzed using analysis of variance; categorical variables analyzed using Pearson chi-square test or Fisher exact test. P-values refer to comparisons between primary payer groups. Mean (standard deviation). Percents may not sum to 100 due to rounding and missing values.