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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

From: What are the inpatient and day case costs following primary total hip replacement of patients treated for prosthetic joint infection: a matched cohort study using linked data from the National Joint Registry and Hospital Episode Statistics

  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)
  1. 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