Running the analysis

  1. To run a Quantile Regression analysis, from the menus choose:
    Figure 1. Quantile Regression dialog
    Quantile Regression dialog
  2. In the Quantile Regression dialog, select Logarithm expence [ltotexp] as a Target Variable.
  3. Select =1 if has supp priv insurance [suppins] and # of chronic problems [totchr] as Factor variables.
  4. Select Age [age] as a Covariate variable.
  5. Click Criteria....
    Figure 2. Quantile Regression: Criteria dialog
    Quantile Regression: Criteria dialog
  6. Enter the values 0.25 and 0.75 as Quantile value(s).
  7. Click Continue to save your changes and return to the main dialog.
  8. 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
    Quantile Regression: Display dialog
  9. Click Continue to save your changes and return to the main dialog.
  10. Click OK.

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