Results 301 to 310 of about 784,357 (332)

Randomization, Allocation, and Blinding

2012
This chapter introduces a number of procedural issues in study design, that is, issues more relating to operations than to medicine or science.The issues of randomization, allocation, and blinding, as well as rules that regulate unblinding, help ensure or maximize the interpretability of the data that are eventually provided by the trial.
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Adaptive allocation in randomized controlled trials

Controlled Clinical Trials, 1985
Adaptive allocation has been proposed as a procedure to reduce the risk of chance imbalance of important prognostic factors in randomized controlled trials when the number of prognostic factors is large. In this article, minimization, a type of adaptive allocation, is compared to simple randomization and stratified allocation in a series of Monte Carlo
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The Random Allocation of Patients in Clinical Trials

Methods of Information in Medicine, 1966
The allocation of patients in controlled clinical trials may be by random selection or by a system of stratification. True matching of the two series can, however, only be achieved by a system of pairing of patients. Such a system is described.
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Additive Decompositions, Random Allocations, and Threshold Phenomena

Combinatorics, Probability and Computing, 2004
An additive decomposition of a set $I$ of nonnegative integers is an expression of $I$ as the arithmetic sum of two other such sets. If the smaller of these has $p$ elements, we have a $p$-decomposition. If $I$ is obtained by randomly removing $n^{\alpha}$ integers from $\{0,\dots,n-1\}$, decomposability translates into a balls-and-urns problem, which ...
Dubois, Olivier, Louchard, Guy, Mandler, Jacques   +2 more
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The Home Office and Random Allocation Experiments

Evaluation Review, 2003
By examining the history of the random experiment in the Home Office in the United Kingdom, this article demonstrates that research is not an altogether rational process and that fashion, personality, and politics are at least as important as science and evidence when setting research and policy programs and determining methodologies. The article also
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Randomization. Part 3: Allocation concealment and randomization implementation

American Journal of Orthodontics and Dentofacial Orthopedics, 2012
Randomization consists of 3 steps: generation of the random allocation sequence, allocation concealment, and implementation of the random allocation sequence. In the previous 2 articles, we discussed the methods to generate the random allocation sequence (the Table summarizes these methods); in this final article on randomization, we will discuss ...
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Random Arc Allocation and Applications

2002
The paper considers a generalization of the well known random placement of balls into bins. Given n circular arcs of lengths ?1, ..., ?n we study the maximum number of overlapping arcs on a circle if the starting points of the arcs are chosen randomly. We give almost exact tail bounds on the maximum overlap of the arcs.
Peter Sanders, Berthold Vöcking
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Randomization, Allocation Concealment, and Blinding

2015
Of major concern in N-of-1 trials, common to any epidemiological approach, is the introduction of bias and confounding. These factors may modify the size of the treatment estimate or shift the treatment estimate away from its true value. The methodological approaches of randomization, allocation concealment, and blinding are employed to prevent or ...
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Fuzzy Random Redundancy Allocation Problems

2010
Due to subjective judgement, imprecise human knowledge and perception in capturing statistical data, the real data of lifetimes in many systems are both random and fuzzy in nature. Based on the fuzzy random variables that are used to characterize the lifetimes, this paper studies the redundancy allocation problems to a fuzzy random parallel-series ...
Junzo Watada, Shuming Wang
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Random Allocations

International Statistical Review / Revue Internationale de Statistique, 1980
J. Galambos, Valentin F. Kolchin, Boris A. Sevast'yanov, Vladimir P. Chistyakov   +3 more
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