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164<br />

Appendix 9<br />

San<strong>of</strong>i-Aventis 61<br />

Bloomfield et al. 64<br />

Study question Grade Comments Grade Comments<br />

21. Details <strong>of</strong> <strong>the</strong> individuals from whom valuations were ✕ NA<br />

obtained are given<br />

Decision modelling<br />

22. Details <strong>of</strong> any decision model used are given NA NA<br />

(e.g. decision tree, Markov model)<br />

23. The choice <strong>of</strong> model used and <strong>the</strong> key input NA NA<br />

parameters on which it is based are adequately<br />

detailed and justified<br />

24. All model outputs described adequately NA NA<br />

Discounting<br />

25. Discount rate used f<strong>or</strong> both costs and benefits ✕ Not undertaken as <strong>the</strong> median survival was ✕<br />

less than 1 year<br />

26. Do discount rates acc<strong>or</strong>d <strong>with</strong> NHS guidance? NA ✕<br />

Allowance f<strong>or</strong> uncertainty<br />

Stochastic analysis <strong>of</strong> patient-level data<br />

27. Details <strong>of</strong> statistical tests and confidence intervals ✓ Student’s t-test, log transf<strong>or</strong>mation and ✕<br />

are given f<strong>or</strong> stochastic data non-parametric statistical tests all used to compare<br />

mean total cost and produce 95% CI. Only rep<strong>or</strong>t<br />

Student’s t-test results due to similarity in results<br />

28. Uncertainty around cost-effectiveness expressed ✓ Fieller’s <strong>the</strong><strong>or</strong>em used to calculate 95% CI f<strong>or</strong> ICER ✕<br />

(e.g. CI around ICER, CEACs)<br />

29. Sensitivity analysis used to assess uncertainty in ✓ One-way sensitivity analysis <strong>of</strong> unit costs and resource ✕<br />

non-stochastic variables (e.g. unit costs, discount rates) use undertaken<br />

and analytic decisions (e.g. methods to handle<br />

missing data)<br />

Stochastic analysis <strong>of</strong> decision models<br />

30. Are all appropriate input parameters included <strong>with</strong> NA NA<br />

uncertainty?<br />

31. Is second-<strong>or</strong>der uncertainty (uncertainty in means) NA NA<br />

included ra<strong>the</strong>r than first-<strong>or</strong>der (uncertainty<br />

between patients)?<br />

continued

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