qreg¶ Fit a bounded quantile regression model for a selected conditional quantile. When to use How do I model conditional medians or other conditional quantiles instead of mean effects? Syntax¶ qreg y x1 x2 [, quantile(<0,1>) robust noconstant] Examples¶ qreg cost age bmi qreg cost age bmi, quantile(0.25) qreg cost age bmi, robust See also¶ Command Reference Index User Guide In-App Help System