Table 5.
Unplanned readmissions over 90-days episode of care by arthroplasty type
Characteristic | Knee Arthroplasty | Hip Arthroplasty | ||
---|---|---|---|---|
N (%) | Readmission (95% CI) | N (%) | Readmission (95% CI) | |
Overall | 351,183 | 6.3% (6.2, 6.4) | 164,508 | 7.0% (6.9, 7.1) |
Sex | ||||
Male | 127,799 (36.4%) | 6.8% (6.7, 6.9) | 63,860 (38.8%) | 6.9% (6.7, 7.1) |
Female | 223,384 (63.6%) | 6.1% (6.0, 6.2) | 100,648 (61.2%) | 7.1% (6.9, 7.3) |
Age, years | ||||
65–69 | 112,283 (32.0%) | 4.7% (4.6, 4.9) | 49,056 (29.8%) | 5.1% (4.9, 5.3) |
70–74 | 103,095 (29.4%) | 5.6% (5.5, 5.7) | 45,391 (27.6%) | 6.0% (5.8, 6.2) |
75–79 | 76,664 (21.8%) | 7.2% (7.0, 7.3) | 34,933 (21.2%) | 7.7% (7.4, 8.0) |
80–84 | 42,401 (12.1%) | 8.8% (8.6, 9.1) | 23,032 (14.0%) | 9.4% (9.1, 9.8) |
≥85 | 16,740 (4.8%) | 11.3% (10.8, 11.8) | 12,096 (7.4%) | 12.1% (11.5, 12.7) |
Race/Ethnicity | ||||
Non-Hispanic White | 310,029 (88.3%) | 6.2% (6.2, 6.3) | 150,707 (91.6%) | 7.0% (6.9, 7.2) |
Non-Hispanic Black | 17,576 (5.0%) | 8.1% (7.7, 8.5) | 7,232 (4.4%) | 8.1% (7.5, 8.7) |
Hispanic | 13,360 (3.8%) | 6.4% (6.0, 6.8) | 3,044 (1.9%) | 6.4% (5.5, 7.2) |
Other | 10,218 (2.9%) | 5.7% (5.2, 6.1) | 3,525 (2.1%) | 4.9% (4.2, 5.7) |
Disability entitlement a | ||||
No | 320,125 (91.2%) | 6.0% (5.9, 6.1) | 152,317 (92.6%) | 6.7% (6.5, 6.8) |
Yes | 31,058 (8.8%) | 9.5% (9.1, 9.8) | 12,191 (7.4%) | 11.3% (10.8, 11.9) |
Dual eligibility b | ||||
No | 324,423 (92.4%) | 6.0% (6.0, 6.1) | 155,315 (94.4%) | 6.8% (6.6, 6.9) |
Yes | 26,760 (7.6%) | 9.8% (9.4, 10.2) | 9,193 (5.6%) | 11.2% (10.6, 11.9) |
Prior hospitalization | ||||
0 | 323,093 (92.0%) | 6.0% (5.9, 6.1) | 150,112 (91.2%) | 6.6% (6.5, 6.7) |
1 | 25,581 (7.3%) | 9.5% (9.1, 9.8) | 12,651 (7.7%) | 10.1% (9.6, 10.7) |
2 | 2,124 (0.6%) | 16.3% (14.8, 17.9) | 1,439 (0.9%) | 18.7% (16.7, 20.7) |
3+ | 385 (0.1%) | 29.9% (25.3, 34.4) | 306 (0.2%) | 30.1% (24.9, 35.2) |
Hospital LOS, days c | ||||
<4 | 296,634 (84.5%) | 5.6% (5.5, 5.7) | 139,849 (85.0%) | 6.2% (6.1, 6.3) |
4–7 | 51,597 (14.7%) | 9.7% (9.5, 10.0) | 23,138 (14.1%) | 10.9% (10.5, 11.3) |
8+ | 2,952 (0.8%) | 21.0% (19.5, 22.5) | 1,521 (0.9%) | 21.7% (19.6, 23.8) |
ICU/CCU d | ||||
No | 336,649 (95.9%) | 6.2% (6.1, 6.2) | 156,869 (95.4%) | 6.8% (6.7, 6.9) |
Yes | 14,534 (4.1%) | 10.0% (9.5, 10.4) | 7,639 (4.6%) | 11.9% (11.2, 12.6) |
Diabetes Status | ||||
None | 270,889 (77.1%) | 5.8% (5.7, 5.9) | 136,621 (83.0%) | 6.6% (6.4, 6.7) |
Controlled – Uncomplicated | 72,137 (20.5%) | 7.6% (7.4, 7.8) | 25,244 (15.3%) | 8.8% (8.5, 9.2) |
Controlled – Complicated | 5,031 (1.4%) | 11.5% (10.6, 12.4) | 1,712 (1.0%) | 14.7% (13.0, 16.4) |
Uncontrolled | 3,126 (0.9%) | 10.6% (9.5, 11.7) | 931 (0.6%) | 12.0% (9.9, 14.1) |
Abbreviations: LOS = length of stay, ICU/CCU = intensive care unit/coronary care unit
“Disability” original reason for receiving Medicare.
Eligible for Medicare and Medicaid.
LOS for hospitalization during joint arthroplasty procedure
Admitted to ICU or CCU during hospitalization for joint arthroplasty procedure.