Health state utility (QALY) | Base case | Sensitivity analysis |
---|---|---|
 End-stage Knee OA | 0.6 | 0.4-0.8 |
 End-stage knee OA with treatment bridge | 0.7 | 0.6-0.9 |
 Primary TKA | 0.9 | 0.6-0.9 |
 Revision TKA | 0.85 | 0.6-0.9 |
 Recovery from revision TKA | -0.1 | -0.25-0 |
 Recovery from early TKA complication | -0.20 | -0.40-0 |
Transition probabilities | Â | Â |
 Early complication after TKA | 0.01 | 0-0.05 |
 Failure to revision of primary TKA (annual) |  |  |
Years 0-9 | 0.005 | 0-0.02 |
Years 10-19 | 0.01 | 0-0.05 |
Years 20+ | 0.02 | 0-0.05 |
 Failure to revision of revision TKA (annual) |  |  |
Years 0-9 | 0.01 | 0-0.04 |
Years 10-19 | 0.02 | 0-0.08 |
Years 20+ | 0.04 | 0-0.10 |
 All-cause mortality | Life Tables | None |
 30-Day mortality after primary TKA | 0.007 | 0-0.014 |
 30-Day mortality after revision TKA | 0.01 | 0-0.02 |
 Wait for TKA | 2 years | 3 weeks to 5 years |
Costs | Â | Â |
 Indirect costs of knee OA | $10,369 | 0-$20,000 |
 Direct costs of knee OA (Non-operative Treatment Bridge) | $2,500 | 0-$3,883 |
 Primary TKA | $26,865 | $20,000-$30,000 |
 Revision TKA | $35,542 | $30,000-$40,000 |