The phrase "as a separate variable" is correct and usable in written English.
It can be used in contexts involving mathematics, programming, or data analysis where you want to indicate that something should be treated independently from other factors.
Example: "In this equation, we will treat temperature as a separate variable to analyze its effect on the reaction rate."
Alternatives: "independently" or "as an individual factor".
In the first formulation we find the pressure bases through performing a limit analysis using a fictitious bulk modulus while in the second formulation the bases are found directly by considering the pressure as a separate variable.
Although there are certainly uses for monitoring the entire diurnal period, it is recommended that the awakening-period cortisol be analyzed as a separate variable, as described below, in addition to the diurnal rhythm.
However in the result section, some of the variables showing number of studies may be more than 39, as few parameters have been divided into subgroups that have been considered as a separate variable.
All patient co-morbidity data was identified using the International Classification of Disease 10th revision (ICD-10) codes, and these were used to calculate the Charlson co-morbidity index for each patient as a separate variable [12].
In this study, one of the research questions is to investigate the specific role of parental education, as a separate variable of the SES, asking which SES variables actually impact in neuropsychological development.
The intercept can be determined in two ways: (i nonfixed intercept: the intercept is considered as a separate variable of which the value is determined through a least-squares fit, (ii)fixed intercept: the intercept is chosen fixed and equal to the free-space path loss at reference distance, that is,, where is the wavelength in m (method of [18]).
Missing values on categorical independent variables have been coded as a separate dummy variable; missing values on continuous independent variables have been imputed by conditional country means. 2 With the exception of household income (18%%), values were missing in less than 1%% of the cases.
One might be concerned about the impact of correlated measurement error when years of education is included both as part of the dependent variables and as a separate independent variable.
Because of the possibility that clients with missing data for this variable were in some manner unique, we included missing values for the pressure ulcer item as a separate dummy variable in the regression analyses.
The research presented herein shows how heliostat placement can be done with each heliostat location as a separate design variable resulting in wholly optimal field placements.
Each category is included as a separate dummy variable into the regressions.
