Results 241 to 250 of about 2,490,701 (287)
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BMJ, 2009
A randomised single blind controlled trial investigated whether pelvic floor muscle training during pregnancy prevented urinary incontinence during and after pregnancy. The trial recruited healthy nulliparous women when they attended their first routine ultrasound.
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A randomised single blind controlled trial investigated whether pelvic floor muscle training during pregnancy prevented urinary incontinence during and after pregnancy. The trial recruited healthy nulliparous women when they attended their first routine ultrasound.
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Random Arc Allocation and Applications
2002The 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 0001, Berthold Vöcking
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Random allocations and probabilistic languages
1988This paper introduces a unified framework for the analysis of a class of random allocation processes that include: (i) the birthday paradox; (ii) the coupon collector problem; (iii) least-recently-used (LRU) caching in memory management systems under the independent reference model; (iv) the move-to-front heuristic of self-organizing search.
Philippe Flajolet +2 more
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Controlled trials: allocation concealment, random allocation, and blinding
BMJ, 2015The efficacy of nicotine patches in pregnant women who smoke was investigated using a randomised placebo controlled trial. The intervention was the administration of 16 hour nicotine patches until the time of delivery. Participants were 402 pregnant women older than 18 years who smoked at least five cigarettes a day and whose babies were between 12 and
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Randomization. Part 3: Allocation concealment and randomization implementation
American Journal of Orthodontics and Dentofacial Orthopedics, 2012Randomization 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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A Resource Allocation Problem in a Random Environment
Operations Research, 1989We consider a resource allocation problem in which various parameters of the model change according to independent random environment Markov processes. There are a finite number of activities that each require a resource, and resources arrive according to a Poisson process.
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Random sampling versus random allocation
BMJ, 2011Researchers investigated the effects of providing people with evidence based information about colorectal cancer and screening. A randomised controlled study design was used. The intervention was a brochure that included personalised risk of colorectal cancer, available screening options with possible benefits and harm, plus information on prevention ...
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BMJ, 2013
Researchers investigated the effects of manual lymph drainage on the development of lymphoedema related to breast cancer. A randomised single blinded controlled trial was performed. The intervention was a six months’ treatment programme consisting of guidelines about prevention of lymphoedema, exercise therapy, and manual lymph drainage.
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Researchers investigated the effects of manual lymph drainage on the development of lymphoedema related to breast cancer. A randomised single blinded controlled trial was performed. The intervention was a six months’ treatment programme consisting of guidelines about prevention of lymphoedema, exercise therapy, and manual lymph drainage.
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Randomization by minimization for unbalanced treatment allocation
Statistics in Medicine, 2009AbstractMinimization is a dynamic randomization technique that has been widely used in clinical trials for achieving a balance of prognostic factors across treatment groups, but most often it has been used in the setting of equal treatment allocations.
Baoguang, Han +2 more
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Adaptive allocation in randomized controlled trials
Controlled Clinical Trials, 1985Adaptive 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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