Skip to main content

Table 1 Model parameters

From: Economic evaluation of access to musculoskeletal care: the case of waiting for total knee arthroplasty

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   
 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   
 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
\