covariate


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covariate

A variable that may affect the outcome of a clinical trial, either because it has a direct causal relationship to the outcome or because it influences the outcome in a non-causal fashion.

covariate

predictors during the allocation of experimental units in a randomized design.
References in periodicals archive ?
As cases and controls within any combination of covariates are set to have equal frequency, then any subset of these combinations including the subset with just one covariate will occur with equal frequency.
The geology map was also used as a covariate input in the predictive models.
Geometric means of the urinary arsenic concentrations, dilution metrics, BMI, and waist-to-height ratio across covariate groups are presented in Table 2.
We therefore removed elevation from further analysis because this covariate was felt to be redundant given that areas of dense vegetative cover are typically restricted to higher elevations throughout our study area.
Objective--To determine the pharmacokinetics of voriconazole administered PO with or without food to red-tailed hawks (Buteo jamaicensis) and whether any observed variability could be explained by measured covariates to inform dose adjustments.
2013) remarked that the addition of covariate would improve model quality criteria for both missing and non-missing repeated measures data.
The distance of each scat detection and covariate record from the start of each transect was calculated using ArcMap10.
This showed slight differences with the multitype Strauss model, as the geomorphology now more stands out as the most explaining covariate, besides the x- and y-coordinates.
Boulder size was included as a continuous covariate, with the factors Position on boulder, Location, and Site, in a univariate PERMANOVA testing the hypothesis that cover is greater at boulder edges.
Although not collected for application to a specific sightability model, these covariate data allowed us to apply existing sightability models retrospectively.