Table 1:
Model Inputs, including costs and utility values, with base case variables, range, and type of distribution used in sensitivity analyses
| Variable | Value | Minimum | Maximum | Reference | Distribution |
|---|---|---|---|---|---|
| Utility Values | |||||
| SD on AA or ADT alone | 0.83 | 0.83 | 1 (AA only) | Chi 201812 | N/A |
| SD on DCT | 0.78 | N/A | N/A | Morgans 201811 | N/A |
| Post-DCT recovery state# | 0.78–0.83 | N/A | N/A | Morgans 201811 | N/A |
| Fatigue | 0.78 | N/A | 0.95 (when AA=1) | Bayoumi 200013 | N/A |
| Febrile Neutropenia | 0.47 | N/A | N/A | Younis 201114 | N/A |
| Progression/Death | 0 | N/A | N/A | N/A | |
| Progressed Disease (sensitivity model to death only) | 0.725 | N/A | N/A | Zhong 201315 | N/A |
| Survival probability at 2 years* | |||||
| ADT | 33% | 26% (HR=1.2) | 41% (HR=0.85) | CHAARTED, LATITUDE5,7 | Normal (log-HR) |
| DCT | 51% | 46% (HR=1.2) | 58% (HR=0.85) | CHAARTED5 | Normal (log-HR) |
| AA | 61% | 55% (HR=1.2) | 67% (HR=0.85) | LATITUDE7 | Normal (log-HR) |
| AE rates | |||||
| DCT discontinuation | 0.12 | N/A | N/A | CHAARTED5 | N/A |
| AA discontinuation | 0.12 | N/A | N/A | LATITUDE7 | N/A |
| Fatigue (ADT) | 0.01 | N/A | N/A | LATITUDE7 | N/A |
| Fatigue (AA) | 0.02 | N/A | N/A | LATITUDE7 | N/A |
| Neutropenia (DCT) | 0.121 | 0.089 | 0.157 | CHAARTED5 | Binomial |
| Febrile Neutropenia (DCT) | 0.061 | 0.04 | 0.09 | CHAARTED5 | Binomial |
| Costs (USD) | |||||
| Drugs/Routine | |||||
| ADT (q3 month) | 1115 | 612 | 1343 | Access Pharmacy,16 VA22 | Gamma |
| ADT non-drug costs (per cycle)Δ | 137 | N/A | N/A | CMS18,19 | N/A |
| AA (per month) | 9368 | 5550 | 11275 | Access Pharmacy,16 VA22 | Gamma |
| AA non-drug costs (per cycle)Δ | 151 | N/A | N/A | CMS18,19 | N/A |
| DCT (per 3 wk cycle) | 1576 | 266 | 1710 | Access Pharmacy,16 VA22 | Gamma |
| DCT non-drug costs (per cycle)Δ | 374 (on trt)/ 142 (post-trt) |
N/A | N/A | CMS18,19 | N/A |
| AEs | |||||
| Neutropenia$ | 5937 | 3579 | 7149 | Access Pharmacy,16 VA22 | Gamma |
| Febrile neutropenia | 18507 | 5843 | 29217 | Lyman 200920 | Gamma |
Assumes linear gain between utility on treatment and after recovery, with full recovery at 12 months from treatment start
Cycle-specific probabilities calculated based on full curves and hazard ratios, 2-year survival probabilities included here to illustrate effects
Cost of peg-filgrastim plus administration
Includes medication administration, physician visits, routine labs, imaging