Sentence examples for center variables are from inspiring English sources
Additional patient and dialysis center variables are presented in Table 2.
Models were adjusted for the medical centers that served as a stratification variable, although due to the small number of centers only fixed effects for the medical center variable were included in the model [ 27].
The centered and standardized variables are projected onto the space spanned by the two chosen components, inside a circle of radius 1.
Now when you look at this max, you see that if these variables are centered, otherwise you do have to add the centering.
Prior to the runtime analysis of the PCA, the data were preprocessed by par scaling (the variables are centered and divided by the square root of their standard deviation).
The models include SES-age interactions and SES-area income-level interactions; the age and area income level variables are centered by their means.9 This implies that the regression coefficients of the two dummy variables, namely the highest and medium SES, should be interpreted as the health difference among different SES groups with area income level 4762.47 yuan and aged 60.
To simplify our discussion, we assume that all the four variables are centered, i.e. their means have been subtracted from initial individual values for each variable.
At both centers, these variables were prospectively collected and recorded using an identical data collection form, which was completed in the emergency department, prior to knowledge of diagnostic testing outcome.
Dummy variables are not centered.
The clinical variables are initially centered on a pandemic similar to the 1957 or 1968 pandemic, rather than the much more severe 1918 pandemic which will tend to favor additional intervention.
