To run a Quantile Regression analysis, from the menus choose: Analyze > Regression > Quantile...
Figure 1. Quantile Regression dialog
In the Quantile Regression dialog, select Logarithm expence [ltotexp] as
a Target Variable.
Select =1 if has supp priv insurance [suppins] and # of
chronic problems [totchr] as Factor variables.
Select Age [age] as a Covariate variable.
Click Criteria....
Figure 2. Quantile Regression: Criteria dialog
Enter the values 0.25 and 0.75 as
Quantile value(s).
Click Continue to save your changes and return to the main dialog.
Click Display and deselect Plot the parameter estimates
for option, select Display the predicted by observed plot, select
Plot or tabulate User-specified effects, add the age
model effect to the Prediction Lines list, and add
totchr and suppins to the Prediction
Tables list.
Figure 3. Quantile Regression: Display dialog
Click Continue to save your changes and return to the main dialog.
