multi-arm multi-stage trials
A multi stage drop the losers design for multi arm clinical trials
... Multi-arm multi-stage trials can improve the efficiency of the drug development process when multiple new treatments are available for ...design multi-arm ...
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Planning multi arm screening studies within the context of a drug development program
... MAMS trials are ones in which multiple experimental treatments are tested within the same trial with a common control ...MAMS trials, including the Medical Research Council Systemic Therapy in Advancing or ...
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Adding abiraterone or docetaxel to long-term hormone therapy for prostate cancer: directly randomised data from the STAMPEDE multi-arm, multi-stage platform protocol.
... controlled trials showing a survival advantage compared to ADT alone for adding radiotherapy to the prostate in men with non-metastatic disease and no known nodal ...
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Evaluation of a multi-arm multi-stage Bayesian design for phase II drug selection trials – an example in hemato-oncology
... mental arm k given the posterior probability that its response rate compared to that observed in the con- trol arm is below some decision threshold; such a rule (2) can be considered as the posterior ...
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Type I error rates of multi arm multi stage clinical trials: strong control and impact of intermediate outcomes
... a multi-arm ...experimental arm were evaluated in a separate two-arm ...a multi-arm trial was used purely for efficiency ...many multi-arm confirmatory ...
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A multi-arm multi-stage clinical trial design for binary outcomes with application to tuberculosis
... cancer trials, could be applied to past TB tri- als. If the rate at which trials are incorrectly stopped for lack-of-benefit on culture status at eight weeks is high then other intermediate outcomes will ...
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Flexible trial design in practice stopping arms for lack of benefit and adding research arms mid trial in STAMPEDE: a multi arm multi stage randomized controlled trial
... It is unlikely that any completely new trial could have 83 sites ready to recruit on activation day, something that would be a considerable achievement. Figure 2 shows (on the left axis) the number of sites recruiting ...
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Issues in applying multi arm multi stage methodology to a clinical trial in prostate cancer: the MRC STAMPEDE trial
... control arm. If the point estimate of the HR for a given research arm is 0·92 or lower we would reject, using a sig- nificance level of 0·25, an intermediate null hypothesis that there is no difference ...
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Impact of lack of benefit stopping rules on treatment effect estimates of two arm multi stage (TAMS) trials with time to event outcome
... for trials with continu- ous, conditionally normal outcome ...research arm at the interim ...two-stage trials and are inapplicable to TAMS designs with more than two ...
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Systematic review of basket trials, umbrella trials, and platform trials: a landscape analysis of master protocols
... “umbrella trials”, and “platform trials” [3–6]. Basket trials refer to designs in which a targeted therapy is eval- uated on multiple diseases that have common molecular ...Umbrella trials, on ...
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How do multi stage, multi arm trials compare to the traditional two arm parallel group design – a reanalysis of 4 trials
... all trials in 2 stages with the first two tables employing PFS as the inter- mediate ...those trials where the treatment arm would have been carried ...treatment arm would have been stopped at ...
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Decision theoretic designs for small trials and pilot studies : a review
... clinical trials conducted in a single stage so that decisions considered are those taken at the end of the trial and those taken regarding trial design prior to the start of the trial essentially using the ...
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The R package MAMS for designing multi arm multi stage clinical trials
... flexible trials: inclusion of multiple experimental treatment arms increases the chances of a success; interim analyses allow to eliminate futile treatments early on and to stop the trial as soon as efficacy of ...
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Uniformly minimum variance conditionally unbiased estimation in multi arm multi stage clinical trials
... The method proposed gives uniformly minimum variance conditionally unbiased estimators in multi-arm multi-stage clinical trials. Estimators are obtained for treatment effects relative ...
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A REVIEW ON MULTI-STAGE EVAPORATIVE COOLER
... with multi-evaporator during on–off cycling and hot-gas bypass defrost- During the defrosting process, the temperature in the cabinet of a showcase becomes higher than the set ...A Multi-Stage ...
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Quality-of-governance standards for carbon emissions trading: developing REDD+ governance through a multi-stage, multi-level and multi-stakeholder approach
... genuine multi- stakeholder processes, in the sense of stake- holders providing the contents of the stand- ards as active participants throughout all stages of the ...
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Design and Analysis of Multi Stage Intercooler
... It gives me immense pleasure to present the paper on “Design and Analysis of Multi-Stage Intercooler”. I would like to mention a special thanks to my respected Guide Dr. M. K. Nalawade Sir, who has provided ...
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Barriers in Cryptography with Weak, Correlated and Leaky Sources
... first stage the attacker generates leakage z = Leak(sk) on the secret key sk, and in the second stage the attacker Break attempts to break security ...
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Experimental Comparison of Multi Stage and One Stage Contests
... the multi-stage ...each stage of the TS ...second stage). This important observation can also help to explain why a multi-stage contest generates significantly higher revenue ...
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Octopus-inspired multi-arm robotic swimming
... Octopus arms, squid tentacles, elephant trunks, and mammalian tongues are examples of muscular hydrostats [16], which, despite lacking skeletal support, like the bodies of snakes, eels or arthropods, are still capable of ...
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