"Threshold-crossing": A Useful Way to Establish the Counterfactual in Clinical Trials?

"Threshold-crossing": A Useful Way to Establish the Counterfactual in Clinical Trials?
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DOI:
10.1002/cpt.515
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发表时间:
2016-12
影响因子:
6.7
通讯作者:
Koenig, F.
Koenig, F.
中科院分区:
医学2区
文献类型:
--
作者:
Eichler, H-G;Bloechl-Daum, B.;Bauer, P.;Bretz, F.;Brown, J.;Hampson, L. V.;Honig, P.;Krams, M.;Leufkens, H.;Lim, R.;Lumpkin, M. M.;Murphy, M. J.;Pignatti, F.;Posch, M.;Schneeweiss, S.;Trusheim, M.;Koenig, F.

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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.
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