To meet the research purpose, variables were chosen and causal relationships were proposed.
For this purpose, variables with absolute factor loadings above 0.6 were considered noteworthy (Additional file 2: Table S2).
For comparability purposes, variables remaining at p<0.10 in any of the models were entered in all the models.
Because of the overwhelming number of variables and for the purpose of variable reduction, factors that explain the least amount of variance will be discarded.
The purpose of variable impact analysis is to measure the sensitivity of model predictions to changes in independent variables.
For that purpose, the variable expressing TOA intervals to be applied within data association phase is created: (6).
For this purpose, four variable response surface design (duty cycle, frequency, maximum and minimum current densities) was utilized.
For this purpose, highly variable microsatellite markers were deemed appropriate.
For this purpose the variable is lagged by one year to eliminate the possible effect of a direct move to a senior physician or chief physician position.
For this purpose, the variable importance in the projection (VIP) was used that has been computed according to the formula used in the SIMCA-P + 12.0.1 (http://www.umetrics.com/).com/
