Table 2.
Characteristics by Discharge Locations of Total Hip Replacement Recipients (N=93,493)
| Variable, n (%) | Home self-care (n=23,533) | HHC (n=34,263) | SNF (n=13,202) | IRF (n=22,495) | pa |
|---|---|---|---|---|---|
| Race | |||||
| White | 22,189 (94.3) | 31,764 (92.7) | 12,193 (92.4) | 20,867 (92.8) | *** |
| AA | 1344 (5.71) | 2499 (7.29) | 1009 (7.64) | 1628 (7.24) | |
| Sex | |||||
| Female | 11,296 (48.0) | 19,343 (56.5) | 7480 (56.7) | 12,751 (56.7) | *** |
| Male | 12,237 (52.0) | 14,920 (43.5) | 5722 (43.3) | 9744 (43.3) | |
| Age group | |||||
| Years <65 | 13,867 (58.9) | 15,047 (43.9) | 5837 (44.2) | 9896 (44.0) | *** |
| Years ≥65 | 9666 (41.1) | 19216 (56.1) | 7365 (55.8) | 12,599 (56.0) | |
| Metro area | |||||
| Metro | 21,124 (89.8) | 32,458 (94.7) | 12,507 (94.7) | 21,304 (94.7) | |
| Nonmetro | 2409 (10.2) | 1805 (5.27) | 695 (5.26) | 1191 (5.29) | |
| Insurance | |||||
| Unknown/uninsured | 225 (0.96) | 207 (0.60) | 76 (0.58) | 118 (0.52) | *** |
| Medicare | 8961 (38.1) | 19,092 (55.7) | 7324 (55.5) | 12,536 (55.7) | |
| Medicaid | 926 (3.93) | 1575 (4.60) | 629 (4.76) | 996 (4.43) | |
| Commercial | 13,223 (56.2) | 13,203 (38.5) | 5085 (38.5) | 8707 (38.7) | |
| Government | 198 (0.84) | 186 (0.54) | 88 (0.67) | 138 (0.61) | |
| Volume of cases (by facility and year) | |||||
| <100/year | 2231 (9.48) | 5976 (17.4) | 2378 (18.0) | 3968 (17.6) | |
| 100–199/year | 4155 (17.7) | 9254 (27.0) | 3313 (25.1) | 6108 (27.2) | |
| 200+/year | 17,147 (72.9) | 19,033 (55.5) | 7511 (56.9) | 12,419 (55.2) | |
| 90-day readmission | 1476 (6.27) | 3766 (11.0) | 1424 (10.8) | 2475 (11.0) | *** |
| 90-day mortality | 25 (0.11) | 184 (0.54) | 63 (0.48) | 111 (0.49) | *** |
| Elixhauser Indexb | |||||
| 0 | 4203 (17.9) | 6006 (17.5) | 2317 (17.6) | 3926 (17.5) | |
| 1–4 | 17,852 (75.9) | 26,096 (76.2) | 10,061 (76.2) | 17,170 (76.3) | |
| ≥5 | 1478 (6.28) | 2161 (6.31) | 824 (6.24) | 1399 (6.22) | |
| Surgery complications | |||||
| Myocardial infarction | 12 (0.05) | 69 (0.20) | 28 (0.21) | 45 (0.20) | *** |
| Prosthetic device complication | 21 (0.09) | 81 (0.24) | 28 (0.21) | 46 (0.20) | *** |
| Surgical wound infection | 7 (0.03) | 18 (0.05) | 5 (0.04) | 5 (0.02) | |
| Venous thromboembolism | 3 (0.01) | 48 (0.14) | 14 (0.11) | 15 (0.07) | *** |
a
Variables are compared by discharge destination using Wald χ2 test from unadjusted binary or multinomial logistic regression models that account for clustering by facility. Significance levels: ***p<0.001.
b
Clinical comorbidities were identified based on coding algorithms developed by Quan et al. (enhanced Elixhauser version), using either the ICD-9-CM or the ICD-10 coding system, as appropriate. The Elixhauser comorbidity index score is calculated based on the cumulative number of comorbidity conditions.