Group Sequential Designs with a single endpoint
Issues in Group Sequential/Adaptive Designs
... these designs and compare efficiency with the fully optimized two-stage design, optimal two-stage group sequential design and designs based on promising conditional ...a group ...
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Comparison of Bayesian and frequentist group sequential clinical trial designs
... The use of a binding futility stopping rule will change the operating characteristics of the group-sequential tests. We have focussed on comparison of Bayesian and frequentist group-sequential ...
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Choice of futility boundaries for group sequential designs with two endpoints
... of group sequential designs, it can generally be differentiated between binding and non-binding stopping for futility rules, compare also Bretz et al ...
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Group Sequential and Adaptive Designs for Three-Arm 'Gold Standard' Non-Inferiority Trials
... Potential control treatments are found through an extensive literature research and need to fulfil certain criteria. First of all, there needs to be sufficient historical evidence for the effi- cacy of the active ...
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Bayesian Designs For Sequential Learning Problems
... β that find good solutions in few samples also work well in terms of overall computation time. Figure 3.4 shows the time taken in a single sample path of the KG 2 β algorithm. It shows that the CPU time per ...
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Experimental Sequential Designs for Logistic Regression Models
... “good” Designs Returning to the binary data family of problems, an experimenter may want to build empirical models for probabilities ...a single factorial design ...a single design can show the ...
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Chapter 14. Experimental Designs: Single-Subject Designs and Time-series Designs
... regarding group performance and not to the performance of specific individual ...The single-subject method also allows us to draw strong conclusions regarding the factors controlling the dependent variable, ...
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Interim analyses and sequential designs in phase III studies
... for sequential trials As highlighted above, a sequential test compares the test statistic measuring treatment difference with appropriate critical ...
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Non-parametric Sequential and Adaptive Designs for Survival Trials
... Remark 2.1. The independent censoring assumption is, despite its name, weaker than stochas- tic independence of the survival and censoring time, which is also called random censoring. Besides (right-) censoring, ...
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A Theory of Sequential Group Reciprocity
... tial group reciprocity equilibrium exists where in single game 1, the daughter of family 1 plays “defect” and the daughter of family 2 plays “cooperate,” and where the mother of the family 1 plays ...
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Sequential Group Testing with Graph Constraints
... identify defective nodes in a graph with n > n 0 nodes. Proof: Using Lemmas IV.4 and IV.3, we have that the total number of tests in our algorithm is at most d(log(n) + 1) + CC(G, d − 1). On the other hand, by Lemma ...
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Targeted Therapies: Adaptive Sequential Designs For Subgroup Selection In Clinical Trials
... adaptive designs can be executed with great flexibility, and adap- tations need not be planned in ...a single subgroup has been identified in earlier phases (or earlier trials) in which a therapeutic ...
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Two-stage optimal designs with survival endpoint when the follow-up time is restricted
... survival endpoint as the primary out- come, the survival probability at the clinically meaningful follow-up time is often the parameter of interest, ...new single- arm two-stage optimal design by using the ...
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Novel sequential methods in dose-finding designs : extensions of the continual reassessment method
... 1.1. DOSE-FINDING DESIGNS 3 onset efficacy outcome would use the available toxicity outcome and the dependency structure between toxicity and efficacy. Once an efficacy outcome becomes available the predicted ...
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Group Lending Model under Sequential Moves
... the sequential group lending's ability to resolve the ex-ante moral hazard and under-monitoring problems among group members in comparison with simultaneous group ...to group members ...
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Adaptive controlled noninferiority group sequential trials
... (I) : T > C, (II) : T > R − ∆, ∆ > 0, in general adaptive group sequential designs. For normally distributed response variables with unknown variances, nested confidence intervals on the ...
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Comparative Analysis of Group Sequential Designs Tests for Randomized Controlled Clinical Trials: A Model Study on Two Sided Tests for Comparing Two Treatments
... comparing group sequential tests in respect to advantage of sample size reduction and early ...in group sequential designs were compared with fixed sample size design test and each ...
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Sequential group recommendations based on satisfaction and disagreement scores
... of sequential group recommendations. We treat the single user recommender system as a black-box, and focus on aggregating the individual group members’ recommendation lists into a group ...
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Robust Test for Multiple Endpoints in Group Sequential Design
... multi-stage designs with multiple endpoints is similar and will be briefly ...primary endpoint; (y 1 ,…,y n )be those for the secondary ...primary endpoint acts as the gatekeeper for the secondary ...
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Sequential choice designs to estimate the distribution of willingness-to-pay
... Sequential choice designs to estimate the distribution of willingness-to-pay Abstract The concept of willingness-to-pay (WTP) has attracted the attention of marketeers because of its use- fulness in many ...
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