Results 321 to 330 of about 11,330,431 (362)
Some of the next articles are maybe not open access.
, 2014
Statistical power analysis , Statistical power analysis , کتابخانه دیجیتال جندی شاپور ...
K. Murphy, B. Myors
semanticscholar +1 more source
Statistical power analysis , Statistical power analysis , کتابخانه دیجیتال جندی شاپور ...
K. Murphy, B. Myors
semanticscholar +1 more source
, 2010
List of figures List of tables List of boxes Introduction Part I. Effect Sizes and the Interpretation of Results: 1. Introduction to effect sizes 2. Interpreting effects Part II. The Analysis of Statistical Power: 3.
P. Ellis
semanticscholar +1 more source
List of figures List of tables List of boxes Introduction Part I. Effect Sizes and the Interpretation of Results: 1. Introduction to effect sizes 2. Interpreting effects Part II. The Analysis of Statistical Power: 3.
P. Ellis
semanticscholar +1 more source
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
Keith E. Muller, Vernon A. Benignus
openaire +3 more sources
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 ...
openaire +2 more sources
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 ...
openaire +2 more sources
Statistical power in two-level models: A tutorial based on Monte Carlo simulation.
Psychological methods, 2019The estimation of power in two-level models used to analyze data that are hierarchically structured is particularly complex because the outcome contains variance at two levels that is regressed on predictors at two levels.
Matthias G. Arend, Thomas Schäfer
semanticscholar +1 more source
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
openaire +4 more sources
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.
openaire +3 more sources
When planning a research study, the issue of the necessary sample size is one that is extremely important.
openaire +3 more sources
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 ...
openaire +2 more sources
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 ...
openaire +2 more sources
Psychology Science, 2017
The sample size necessary to obtain a desired level of statistical power depends in part on the population value of the effect size, which is, by definition, unknown.
Samantha F. Anderson +2 more
semanticscholar +1 more source
The sample size necessary to obtain a desired level of statistical power depends in part on the population value of the effect size, which is, by definition, unknown.
Samantha F. Anderson +2 more
semanticscholar +1 more source
The importance of statistical power [PDF]
BMJ, 2013 The effectiveness of a home based early childhood intervention on children’s body mass index (BMI) at age 2 years was investigated. A randomised controlled superiority trial was used. The intervention consisted of eight home visits from specially trained community nurses in the first 24 months after birth.
openaire +1 more source