The relations between the measured variables and mortality or massive bleeding were analyzed by stepwise logistic regression analysis (the backward stepwise method based on likelihood) with the use of death or massive bleeding as dependent variables.
In particular, we realised that a forward stepwise procedure based on Bonferroni significance would be preferable to the backwards stepwise algorithm we originally used to remove non-independent signals.
Stepwise selection based on p-values or the change-in-estimate are common statistics-based approaches [ 4].
The final selection was performed using the stepwise selection based on the Akaike criterion.
Two stepwise procedures based on variance estimators are proposed for selecting the significant variables in a general nonparametric regression model.
The experiences suggest that Stepwise EPDs based on life cycle assessment can be a cost-efficient tool to improve the environmental performance of products.
The decay of ejecta thickness away from a source was estimated using a graphical stepwise function based on thickness represented by the collected samples and isopach area (Rose et al. 2008).
Table 1 Model variables selected for each subject by using the stepwise method based on AIC Selecteded variables AIC Subject A ((V_y, O_z, F_z)) 16.310 Subject B ((M_x, V_y, F_z)) 16.292 Subject C ((M_y, V_y, F_z)) 20.171 Subject D ((M_y, V_y, F_z)) 18.983.
The stepwise optimization based procedure for the design of heat-integrated distillation processes as presented by Harwardt et al. (2009) is extended to include complex column designs such as the divided wall column.
