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 ?
For the remaining analyses, we only present the results from the models with no covariate and the results from the full regression model controlling for both demographic and employment characteristics to keep the discussion focused.
where [beta] is a constant vector and (t | X) denotes the resultant instantaneous hazard rate, given the value of the covariate vector, X, at time t.
In some studies family size has been introduced as correlated covariate factor (Black et al.
Our research underscores the importance of accounting for parental IQ as a critical covariate when modeling the association between childhood stunting and IQ.
Analysis of covariance (ANCOVA) was used to test differences in means between full and part-time faculty using Orientation Attendance as the covariate for "Grade Your Instructor" items and Information about Using WebCT items.
The resident-level covariate for this QM is an MDS item indicating cognitive impairment, with the rationale being that residents with greater cognitive impairment are less likely to report pain.
We would divide the hazard ratio for the Middle Atlantic covariate by the hazard ratio of the East South Central census division to get 0.
In contrast, activity was the most significant covariate in our final models (Table 2).
We also included surveying effort per site (trapnights) as a covariate to be used in modeling.
The covariate Overlap was not tested as a predictor of the amount of cannibalism because it was assumed that where cannibalism occurred, predator and prey pollock co-occurred.
Covariates were assessed in sequential models (adding 1 covariate at a time) with the goal of fitting a final parsimonious model for all dyspneic patients.
The reasoning for these objectives was to evaluate whether using the covariate "species" in the multiple covariate distance sampling (MCDS) engine of Program DISTANCE (Thomas et al.