Table 2.
Average total and annual inpatient and day case hospital admission costs over the 5 years following THR, by revised PJI and comparator patients
| Revised PJI group (n = 422) | Comparator group (n = 1923) | Adjusted difference in costs (£) (95% confidence interval) | |
|---|---|---|---|
| Adjusted cost (£) | Adjusted cost (£) | ||
| Mean (SE) | Mean (SE) | ||
| 1st year post-primary | 14,686 (816) | 1959 (111) | 12,727 (11,094 to 14,360) |
| 2nd year post-primary | 10,575 (682) | 1503 (91) | 9071 (7719 to 10,424) |
| 3rd year post-primary | 6974 (580) | 1512 (97) | 5462 (4306 to 6618) |
| 4th year post-primary | 5168 (501) | 1584 (131) | 3584 (2611 to 4557) |
| 5th year post-primary | 4427 (431) | 1568 (101) | 2859 (1999 to 3720) |
| Total over 5 years | 41,633 (1303) | 8181 (289) | 33,452 (30,828 to 36,077) |
Marginal means after adjusting for excess zero; adjusted for age, sex, ASA grade, diagnosis of osteoarthritis, operation date, Charlson Comorbidity Index, bearing surface and procedure