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Finding the right power balance: Better study design and collaboration can reduce dependence on statistical power. [PDF]
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Increasing scientific power with statistical power
Neurotoxicology and Teratology, 1992A survey of basic ideas in statistical power analysis demonstrates the advantages and ease of using power analysis throughout the design, analysis, and interpretation of research. The power of a statistical test is the probability of rejecting the null hypothesis of the test. The traditional approach to power involves computation of only a single power
K E, Muller, V A, Benignus
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Statistical Power in Psychiatric Research
Australian & New Zealand Journal of Psychiatry, 1986Statistical power is neglected in much psychiatric research, with the consequence that many studies do not provide a reasonable chance of detecting differences between groups if they exist in the population. This paper attempts to improve current practice by providing an introduction to the essential quantities required for performing a power analysis (
Bird, Kevin D., Hall, Wayne
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Pediatrics, 1989
Pediatrics, July 1988, contained two articles, each of which had a "negative result" as its primary conclusion. That is, in each study the authors looked for a statistically significant difference between two groups and found none. A third study? in the same issue also concluded "no difference" in an important comparison between its study and control ...
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Pediatrics, July 1988, contained two articles, each of which had a "negative result" as its primary conclusion. That is, in each study the authors looked for a statistically significant difference between two groups and found none. A third study? in the same issue also concluded "no difference" in an important comparison between its study and control ...
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International Journal of Injury Control and Safety Promotion, 2014
When planning a research study, the issue of the necessary sample size is one that is extremely important.
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When planning a research study, the issue of the necessary sample size is one that is extremely important.
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Pediatrics, 1987
To the Editor.— Dr Donowitz described an interesting research project in which the efficacy of overgown use in the prevention of pediatric intensive care unit nosocomial infection was examined.1 He concludes that "overgowns were an expensive and ineffective method of preventing or decreasing nosocomial infections."1 Although Dr Donowitz ...
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To the Editor.— Dr Donowitz described an interesting research project in which the efficacy of overgown use in the prevention of pediatric intensive care unit nosocomial infection was examined.1 He concludes that "overgowns were an expensive and ineffective method of preventing or decreasing nosocomial infections."1 Although Dr Donowitz ...
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