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What Is the Appropriate Sample Size in Human Cadaveric Studies? A Quantitative Review of 770 Articles. [PDF]
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The American Statistician, 2003
Conventionally, sample size calculations are viewed as calculations determining the right number of subjects needed for a study. Such calculations follow the classical paradigm: for a difference X, I need sample size Y. We argue that the paradigm for a sample size Y, I get information Z is more appropriate for many studies and reflects the information ...
Parker R.A., Berman N.G.
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Conventionally, sample size calculations are viewed as calculations determining the right number of subjects needed for a study. Such calculations follow the classical paradigm: for a difference X, I need sample size Y. We argue that the paradigm for a sample size Y, I get information Z is more appropriate for many studies and reflects the information ...
Parker R.A., Berman N.G.
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Archives of Pediatrics & Adolescent Medicine, 1988
Before undertaking a research comparison, investigators may wish to estimate the sample sizes needed to assure that the research is feasible and is worth the effort and expense. Such calculations require several decisions by the researchers: (1) the acceptable level of the type I error (P value), (2) the desired power of the test, (3) the difference ...
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Before undertaking a research comparison, investigators may wish to estimate the sample sizes needed to assure that the research is feasible and is worth the effort and expense. Such calculations require several decisions by the researchers: (1) the acceptable level of the type I error (P value), (2) the desired power of the test, (3) the difference ...
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Annals of Internal Medicine, 1983
Excerpt To the editor: The nomograms described by Young and associates (1) enable rapid estimation of sample size appropriate for study of an hypothesis.
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Excerpt To the editor: The nomograms described by Young and associates (1) enable rapid estimation of sample size appropriate for study of an hypothesis.
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BMJ, 2010
A randomised controlled trial investigated whether a computerised feedback device modified eating behaviour and resulted in weight loss in obese adolescents.1 The primary outcome was change in body mass index (BMI) from recruitment to 12 months. BMI was calculated as weight (kg)/[height (m)]2, adjusted for age and sex.
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A randomised controlled trial investigated whether a computerised feedback device modified eating behaviour and resulted in weight loss in obese adolescents.1 The primary outcome was change in body mass index (BMI) from recruitment to 12 months. BMI was calculated as weight (kg)/[height (m)]2, adjusted for age and sex.
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