Table 14:
Parameter Distributions
| Parameter | Distribution |
|---|---|
| Mortality and functional independence at 90 days | Beta |
| Effectiveness of mechanical thrombectomy (OR of MT+IVT vs. IVT alone) | Log normal |
| Natural disease history after 3 months of stroke | Calibration |
| Costsa | Gamma |
| Utility | Beta |
Abbreviations: IVT, intravenous thrombolysis; MT, mechanical thrombectomy; OR, odds ratio.
a
The BURST study45 did not report 95% confidence intervals or standard errors for cost estimates. We assumed that the standard error was equal to a 20% mean in the probabilistic sensitivity analysis.