منابع مشابه
Generation of allocation sequences in randomised trials: chance, not choice.
The randomised controlled trial sets the gold standard of clinical research. However, randomisation persists as perhaps the least-understood aspect of a trial. Moreover, anything short of proper randomisation courts selection and confounding biases. Researchers should spurn all systematic, non-random methods of allocation. Trial participants should be assigned to comparison groups based on a ra...
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BACKGROUND Selective allocation of patients into the compared groups of a randomised trial may cause allocation bias, but the mechanisms behind the bias and its directionality are incompletely understood. We therefore analysed the mechanisms and directionality of allocation bias in randomised clinical trials. METHODS Two systematic reviews and a theoretical analysis. We conducted one systemat...
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Proper randomisation rests on adequate allocation concealment. An allocation concealment process keeps clinicians and participants unaware of upcoming assignments. Without it, even properly developed random allocation sequences can be subverted. Within this concealment process, the crucial unbiased nature of randomised controlled trials collides with their most vexing implementation problems. P...
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پروژه پژوهشی "توافق درباره‌ی پیامدهای قابل اندازه‌گیری در کارآزمایی های کنترل‌دار مربوط به مراقبت‌های سوختگی" توسط گروهی از پژوهش‌گران با تجربه، در حوزه سوختگی، زیر نظر دکتر Young از کشور انگلستان در حال انجام می‌باشد. هدف نهایی از انجام این مطالعه، تهیه و تدوین مجموعه‌ای از پیامدهای اساسی (core outcome set (COS)) است که در گزارش کارآزمایی های شاهد‌دار تصادفی مربوط به مراقبت‌های سوختگی باید مور...
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ژورنال
عنوان ژورنال: Journal of Physiotherapy
سال: 2013
ISSN: 1836-9553
DOI: 10.1016/s1836-9553(13)70174-7