large sample sizes
Need for Large Sample Sizes in Randomized Trials
... In contrast, a trial must have a sufficient sample size to detect reliably the likely small to moderate differences between treatment groups. The major danger in a trial of insufficient [r] ...
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Bringing data to the surface: recovering data loggers for large sample sizes from marine vertebrates
... recovering large numbers of data loggers over a broad search area that has proven successful even for large marine species capable of traveling substantial distances in a short time ...188 large ...
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Fusion Method for True Value Estimation Based on Information Poor Theory
... Abstract—Poor information means incomplete and insufficient information, such as small sample and unknown distribution. For point estimation under the condition of poor information, the statistical methods relied ...
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A Permutation Test for Unit Root in an Autoregressive Model
... to large sample sizes or normal white noises. When sample sizes are small and white noises are from distributions with heavy tails, to test for the pres- ence of unit root, we can use ...
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Effect of vitamin D supplementation on inflammation and nuclear factor kappa-B activity in overweight/obese adults: a randomized placebo-controlled trial
... (1) large sample sizes with sufficient power to detect small changes; (2) participants with vitamin D-deficiency and a wider range of baseline inflammatory marker concentrations; and (3) assessment ...
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The collection and analysis of job advertisements: A review of research methodology
... the large volumes of data which research of this type can generate, inferential statistical analysis is a ...The large sample sizes mean that the application of inferential statistical ...
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To Weight or Not To Weight? A Statistical Analysis of How Weights Affect the Reliability of the Quarterly National Household Survey for Immigration Research in Ireland
... of rich data sources on immigrants. While countries like Canada and Australia have conducted major surveys targeting their immigrants such as the Longitudinal Survey of Immigrants to Canada and the Longitudinal Survey of ...
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Bayesian Analysis of the Behrens Fisher Problem under a Gamma Prior
... different sample sizes, whether large or small, equal or unequal, the conclu- sions of a hypothesis test based on either the Generalized p-value, the Posterior Predictive p-value, the New Bayesian ...
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On the Sample Size Requirement in Genetic Association Tests When the Proportion of False Positives Is Controlled
... small sample size (say, 200) and small number of disease- associated ...the sample size is ...for large allele frequency difference (10%) between the cases and controls, especially for large ...
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Devising, Implementing, and Evaluating Interventions to Eliminate Health Care Disparities in Minority Children
... designs; large sample sizes; appropriate comparison groups; community-based interven- tions that are culturally and linguistically sensitive and involve collab- oration with participants; research ...
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File popularity characterisation
... The analysis of cache popularity curves requires careful definition of what is to be analysed and, since the data displays significant long range dependency, very large sample sizes. With appropriate ...
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Prediction intervals for reliability growth models with small sample sizes
... as sample size increase, the degree of underestimation arising from the use of confidence rather than prediction intervals will be less for large sample sizes compared with small sample ...
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A power comparison of various normality tests
... the sample size, level of significance and alternate ...the sample size and level of significance, power of these tests also ...small sample sizes but for moderate and large ...
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The Framework and Measure of Effective School Visioning Strategy (MCP-FIV)
... This sample size is divided into three governance types (public, separate, and private) and three schools sizes (small, medium, and large) in order to conduct certain statistical anal[r] ...
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How to talk so kids will listen & listen so kids will talk: a randomized controlled trial evaluating the efficacy of the how-to parenting program on children’s mental health compared to a wait-list control group
... multiple informants, along with a large sample size and longitudinal follow-ups, even though for teacher- reports, respondents will have changed within the year-long study. Rigorous methodological ...
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A novel framework for validating and applying standardized small area measurement strategies
... the large number of surveys and adminis- trative systems that collect health information at the national level stands in contrast to the relative scarcity of accurate and precise local-level ...a sample ...
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Supporting thinking on sample sizes for thematic analyses: a quantitative tool
... project ( ‘ small ’ , ‘ medium ’ , or ‘ large ’ ). For small projects, 6 – 10 participants are rec- ommended for interviews, 2 – 4 for focus groups, 10 – 50 for participant-generated text and 10 – 100 for ...
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Epidemiological Studies Based on Small Sample Sizes – A Statistician's Point of View
... of sample size, that is how many subjects should be included in order to detect a significant difference of the study factor or ...of sample size is based on assumptions re- garding expected treatment ...
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Effect Of Sample Sizes On The Empirical Power Of Some Tests Of Homogeneity Of Variances
... The study compares four tests for homogeneity of variances based on their powers through simulation studies. The simulation is conducted by varying different sample sizes to determine which of the tests ...
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An audit of sample sizes for pilot and feasibility trials being undertaken in the United Kingdom registered in the United Kingdom Clinical Research Network database
... smaller sample size per arm (median = 30, range = 8 to 114 participants) than feasibility trials (median = 36, range = 10 to 300 ...median sample size per arm was 36 (range = 10 to 300 participants) for ...
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