Statistical Power
Statistical power as a function of Cronbach alpha of instrument questionnaire items
... Background: In countless number of clinical trials, measurements of outcomes rely on instrument questionnaire items which however often suffer measurement error problems which in turn affect statistical ...
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AdmixPower: Statistical Power and Sample Size Estimation for Mapping Genetic Loci in Admixed Populations
... Calculating statistical power in an admixed population for admixture mapping studies is a complicated process that requires the researcher to specify several factors including (a) risk allele frequency ...
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Enrichment of statistical power for genome-wide association studies
... of statistical power for the four models (GLM, MLM, CMLM, and ECMLM) using different numbers of PCs was also investigated (Additional file 1: Figure ...The statistical power was evaluated on a ...
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Phylogenomic Identification of Regulatory Sequences in Bacteria: an Analysis of Statistical Power and an Application to Borrelia burgdorferi Sensu Lato
... The statistical power of the phylogenomic approach depends on the degree of se- quence conservation, the length of regulatory elements, and the level of phylogenetic divergence among ...
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Design of Financial Derivatives: Statistical Power does not Ensure Risk Management Power
... a statistical relationship to an index number, or risk factor, and the producer can buy a derivative on the index number, which provides the producer with an indirect hedge against low ...explanatory power ...
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Statistical Power Analysis in ODA, CTA and Novometrics (Invited)
... “lowest power” outcome that is possible in a study, as more sensitive metrics obviously offer greater statistical power vis-à- vis their enhanced measurement ...Moreover, power can be ...
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Augmentation of Experimental Design Using Statistical Power
... The objective of an experiment in any field is to find the factors which significantly affect the response variable of interest. The yardstick for measuring how good the experiment was or the conclusions obtained from ...
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Factors affecting statistical power in the detection of genetic association
... the statistical analyses were performed with trio (father, mother, affected offspring) and case-control designs with genotype relative risks estimated to be over ...
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A protocol for a systematic review of non-randomised evaluations of strategies to increase participant retention to randomised controlled trials
... the statistical power and internal validity of clinical ...reduce power and can bias the esti- mates of intervention effect, especially if participants lost to follow-up are different from those ...
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Improved design method for biosecurity surveillance and early detection of non-indigenous rats
... this statistical power condition for a non-indigenous invertebrate species, the big-headed ant (Pheidole megacephala) (Whittle et ...increased power to detect ant incursions on Barrow Island while ...
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Large-scale discovery of novel genetic causes of developmental disorders
... modeling statistical power suggests that studying ~1,000 trios has only 5-10% power to detect an averagely mutable haploinsufficient DD gene (Extended Data Figure 6A, Supplementary Information), (ii) ...
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Genetic model misspecification in genetic association studies
... plausible that in some studies a binary genetic variant is incorrectly modelled as additive. This represents a mis- specification of the true underlying genetic model, an error which could have an adverse effect on the ...
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Pigmentary keratitis in pugs in the United Kingdom: prevalence and associated features
... increase statistical power of this ...the statistical strength of this association warrants fur- ther study if we are to determine how important the presence of limbal pigmentation is as a risk ...
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Extreme Value Theory Filtering Techniques for Outlier Detection
... the statistical power of the test we show that for tests based on extreme value theory the power depends on the magnitude of the outlier, but also on the rate of convergence of the sample maximum and ...
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How to Orient Yourself in the Wilderness
... The purpose of this study was to examine the relationship among gender role conflict, normative male alexithymia, and men’s best same sex friendship discords; and the impact of this triadic relationship on young adult ...
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Detecting differential gene expression in blastocysts following pronuclear transfer
... Nuclear transfer techniques (a.k.a. mitochondrial replacement therapies) are currently under development to pro- vide a route to eliminating particular instances of mitochondrial disease from the germline. Before these ...
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Evaluating market power in congested power systems
... of power the buyers can import, as well as the amount of generation each seller can provide towards the simultaneous ...market power in the electricity ...
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Effect of child health status on parents’ allowing children to participate in pediatric research
... The requisite sample size was calculated using data from Van Stuijvenberg et al. [30]. Van Stuijvenberg et al. reported that the major reason (32%) why parents of sick children agreed that their children could ...
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Random Response of a Strongly Nonlinear Oscillator with Internal and External Excitations
... the statistical characteristics of strongly nonlinear second order oscillators are studied by examining the joint probability density function of the response X X , ...the power spectral density function ...
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On the Influence of Fluctuations of the Direction of an External Magnetic Field on Phase and Amplitude Correlation Functions of Scattered Radiation by Magnetized Plasma Slab
... In our numerical calculations frequency of radiated electromagnetic wave is 40 MHz. Plasma slab 100 km thick is situated at a height 300 km over the Earth. The small thickness of the irregularity layer gives rise to ...
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