Table 2.
Direct costs of the interventions
| Component | Mean (95% confidence interval) ($) | p valuea (DAIR vs one-stage revision) | |
|---|---|---|---|
| Total direct cost | DAIR | One-stage revision | |
| Revision event | 50,974 (43,201–58,747) | 53,410 (49,587–57,232) | 0.684 |
| Index revision + follow-upβ | 162,939 (119,974–$205,904) | 130,924 (114,948–$146,900) | 0.501 |
| Direct medical costs | |||
| Total direct medical cost | 43,534 (36,645–50,423) | 46,098 (42,780–49,416) | 0.622 |
| Allied health | 1374 (1001–1747) | 1775 (1537–2014) | 0.277 |
| Critical care | 1816 (0–3748) | 1782 (871–2693) | 0.981 |
| Depreciation | 441 (350–531) | 452 (401–503) | 0.888 |
| Hotel | 640 (488–793) | 595 (545–645) | 0.573 |
| Imaging | 755 (528–983) | 698 (614–782) | 0.668 |
| Non-clinical salaries | 1718 (1342–2094) | 1816 (1619–2014) | 0.750 |
| Operating room | 9433 (8231–10,634) | 10,685 (9852–11,519) | 0.331 |
| Oncosts§ | 2368 (1925–2810) | 2384 (2171–2597) | 0.961 |
| Pathology | 1331 (1049–1612) | 1688 (1509–1868) | 0.199 |
| Pharmacy | 1694 (1172–2215) | 1855 (1513–2197) | 0.760 |
| Prosthesis | 6653 (3924–9382) | 7376 (6463–8290) | 0.622 |
| Special procedure suites | 70 (0–165) | 121 (74–168) | 0.482 |
| Ward medical (specialist/officer) | 4457 (3044–5869) | 4223 (3785–4661) | 0.742 |
| Ward nursing | 8990 (6964–11,016) | 8646 (7819–9473) | 0.793 |
| Ward supplies | 1794 (1150–2438) | 1999 (1693–2305) | 0.669 |
| Direct non-medical costs | |||
| Total direct non-medical cost | 7440 (6209–8670) | 7312 (6723–7900) | 0.890 |
| Allied health | 310 (214–407) | 387 (345–429) | 0.248 |
| Critical care | 364 (0–807) | 360 (180–540) | 0.989 |
| Depreciation | 298 (135–460) | 382 (295–468) | 0.533 |
| Hotel | 32 (16–48) | 32 (24–41) | 0.966 |
| Imaging | 129 (95–163) | 111 (95–126) | 0.447 |
| Non-clinical salaries | 424 (226–622) | 461 (374–548) | 0.788 |
| Operating room | 1722 (1432–2012) | 1543 (1416–1671) | 0.374 |
| Oncosts§ | 148 (78–218) | 175 (142–209) | 0.598 |
| Patient travel subsidy | 316 (117–535) | 174 (22–326) | 0.490 |
| Pathology | 133 (75–191) | 117 (91–144) | 0.698 |
| Pharmacy | 115 (80–150) | 124 (109–140) | 0.696 |
| Special procedure suites | 7 (0–16) | 9 (3–16) | 0.804 |
| Ward medical (specialist/officer) | 2659 (1693–3624) | 2176 (1869–2482) | 0.330 |
| Ward nursing | 554 (253–856) | 682 (561–803) | 0.503 |
| Ward supplies | 530 (368–691) | 744 (631–857) | 0.221 |
DAIR Debridement, antibiotics, and implant retention aTwo-sample Student’s t test
§The oncosts as used by Queensland health management includes superannuation, termination payment, lump-sum payment, fringe benefits tax, income tax expense, long service leave, annual leave, accrued days off, other leave, work cover premium (workers compensation), and recruitment costs
βThree-year follow-up