Sample size and discrimination between models
Discrimination-based sample size calculations for multivariable prognostic models for time-to-event data
... basing sample size on the significance of numerous individual variables is likely to be an intractable ...cited sample size recommendation is the rule of ‘10 events per variable’ (EPV) which ...
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The effects of sample size on the estimation of regression mixture models
... le size o n reg ressio n m ix tu re m o d els, w ith serio u s p ro b lem s arisin g in sm all sam p ...for sample-size requirements, which will differ strongly from study to study, and maintain that ...
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Effects of sample size on the performance of species distribution models
... smallest sample size, but predictions made for large sample sizes generally out- performed those at the smallest sample ...large sample size ...large sample size, ...
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Adaptive sample size determination for the development of clinical prediction models
... Ethics approval and consent to participate Both datasets originated from observational studies. For the CARDIIGAN dataset, patients gave their written informed consent for the coronary angiography and approval has been ...
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A simulation study of sample size for multilevel logistic regression models
... tistical models designed for data with hierarchical struc- ture. These models are variously known as mixed, hierarchical linear, random coefficient, and multilevel ...multilevel models can be used as ...
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Economic Models of Discrimination
... Rosburg (ISU) Economic Models of Discrimination Spring 2010 31 / 59 Taste Discrimination Employee/Coworker. Arrow (1971) - Employee/Coworker[r] ...
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The Influence of Sample Size on Parameter Estimates in Three-Level Random-Effects Models
... longitudinal models, it is often unclear which sample size is necessary for reliable parameter ...various sample and missing value conditions and compared analysis results with the true ...
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Design selection criteria for discrimination between nested models for binomial data
... enable discrimination between competing forms for a response ...linear models (GLMs) for a binomial response. These models are assumed to have a common link function with the linear predictor ...
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Classification Accuracy Effects of Q-Matrix Validation and Sample Size in DINA and G-DINA Models
... Generalized-DINA(G-DINA) Models under different distributions and sub-sample sizes which were calculated using DINA and Generalized-DINA(G-DINA) ...of sample size are searched in modelling the ...
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A Guide to Sample Size Calculations for Random Effect Models via Simulation and the MLPowSim Software Package
... the sample may be absent on the day of the test, resulting in ...a sample size of nearly 800, assuming that the proportion of girls varied between ...
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The Link Between Everyday Discrimination, Healthcare Utilization, and Health Status Among a National Sample of Women
... perceived discrimination was asso- ciated with increased exposure to the healthcare setting, more so than other factors traditionally focused on discrimination and health research, including ...
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Sample size matters: investigating the effect of sample size on a logistic regression susceptibility model for debris flows
... different sample sizes in light of the following problem: on the one hand, a sample has to be large enough to cover the variability of geofactors within the study area, and to yield stable and reproducible ...
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Power and sample size in multilevel modeling
... on sample size and other design aspects; on effect size or, more generally, parameter values; and on the level of ...multilevel models, however, there is a sample size for each ...
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Determining the sample size
... the sample size affects t as well as ...distinction between the normal and t distributions, so often we do ignore that distinction and just use the z value, ...
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The Relationship between Discrimination, Distress Tolerance, and Substance Use in an Arab American Community Sample
... of discrimination may be related to substance use in minority ...with discrimination and tolerance to distressful events may be influencing substance use within this ...relationship between ...
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-Power/Sample Size Considerations
... cosegregation between genetic markers and putative disease loci, and has been very successful in localizing rare, Mendelian disorders but since has difficulty for traits which do not strictly follow Mendelian mode ...
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An association between ICP-derived data and outcome in TBI patients: The role of sample size
... divided between two groups, favorable (FAV) and unfavorable (UNF), according to their GOS score: 1—Death (D); 2—Persistent Vegetative State (PVS); 3—Severe disability (SD); 4—Moderate Disability (MD) and 5—Good ...
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Relationship between sleep characteristics and measures of body size and composition in a nationally-representative sample
... body measurements obtained at the same time. Therefore we are not able to determine the temporal relationship between them or make causal inference. Second, all sleep variables were self-reported and are therefore ...
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A comparison between the performances of double sampling X and variable sample size X charts
... sensitive for the detection of small to moderate mean shifts in the process. Since only one chart’s parameter, i.e the sample size, varies for these two charts, both the DS X and VSS X charts are studied in ...
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How sample size can effect landslide size distribution
... landslide size distributions of the XW dataset as the pre- defined theoretical distributions for the Monte Carlo simulations, and will also test whether the observed vari- ances in parameters between the R ...
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