Table 2.
Model Parameters
| Description | Parameter Name | Parameter Value |
|---|---|---|
| Discount rate | disc | 0.03 |
| DES simulations to perform (1000s) | n | 1000 |
| Diff Eq Time step for DEQ approach | resolution | 0.019 |
| Time horizon (years) of simulation | horizon | 40 |
| Willingness to pay threshold used for NMB ($1000s / QALY) | wtp | 100 |
| Shape Parameter from Gompertz model of secular death for 40yr female fit using 2012 U.S. Social Security mortality data. | shape | 0.101 |
| Rate Parameter from Gompertz model of secular death for 40yr female fit using 2012 U.S. Social Security mortality data. | rate | 0.001 |
| Population prevalence of genetic variant. | p_g | 0.2 |
| Condition indication percentage | r_a_pct | 10 |
| Condition indication time period (years) | r_a_dur | 10 |
| Probability of ordering the genetic test. | p_o | 1 |
| Probability of death from adverse drug event. | p_bd | 0.1 |
| Adverse drug event percentage | r_b_pct | 25 |
| Adverse drug event time period (years) | r_b_dur | 1 |
| Relative risk of adverse drug event among patients with genetic variant present and alternative therapy prescribed. | rr_b | 0.8 |
| Initial cost at indication ($1000s). | c_a | 10 |
| Cost of standard drug therapy. | c_tx | 0.25 |
| Cost of pharmacogenomic alternative drug therapy. | c_alt | 3 |
| Cost of adverse drug event survival ($1000s). | c_bs | 25 |
| Cost of adverse drug event case fatality ($1000s). | c_bd | 20 |
| Cost of genetic test. | c_t | 200 |
| Disutility of developing condition. | d_a | 0.05 |
| Disutility duration (years) after developing condition. | d_at | 1 |
| Lifetime disutility of adverse drug event among survivors. | d_b | 0.15 |
DES = Discrete Event Simulation
NMB = Net Monetary Benefit
QALY = Quality-adjusted life years