“Threshold‐crossing”: A Useful Way to Establish the Counterfactual in Clinical Trials?

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“Threshold‐crossing”: A Useful Way to Establish the Counterfactual in Clinical Trials?

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Title: “Threshold‐crossing”: A Useful Way to Establish the Counterfactual in Clinical Trials?
Author: Eichler, H‐G; Bloechl‐Daum, B; Bauer, P; Bretz, F; Brown, J; Hampson, LV; Honig, P; Krams, M; Leufkens, H; Lim, R; Lumpkin, MM; Murphy, MJ; Pignatti, F; Posch, M; Schneeweiss, S; Trusheim, M; Koenig, F

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Citation: Eichler, H., B. Bloechl‐Daum, P. Bauer, F. Bretz, J. Brown, L. Hampson, P. Honig, et al. 2016. ““Threshold‐crossing”: A Useful Way to Establish the Counterfactual in Clinical Trials?” Clinical Pharmacology and Therapeutics 100 (6): 699-712. doi:10.1002/cpt.515. http://dx.doi.org/10.1002/cpt.515.
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Abstract: A central question in the assessment of benefit/harm of new treatments is: how does the average outcome on the new treatment (the factual) compare to the average outcome had patients received no treatment or a different treatment known to be effective (the counterfactual)? Randomized controlled trials (RCTs) are the standard for comparing the factual with the counterfactual. Recent developments necessitate and enable a new way of determining the counterfactual for some new medicines. For select situations, we propose a new framework for evidence generation, which we call “threshold‐crossing.” This framework leverages the wealth of information that is becoming available from completed RCTs and from real world data sources. Relying on formalized procedures, information gleaned from these data is used to estimate the counterfactual, enabling efficacy assessment of new drugs. We propose future (research) activities to enable “threshold‐crossing” for carefully selected products and indications in which RCTs are not feasible.
Published Version: doi:10.1002/cpt.515
Other Sources: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5114686/pdf/
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:29626024
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