Is there a reference cell?

SAS OUTPUT 1 Dependent Variable: HDL1 year 1 HDL cholesterol (mg/dl) The GLM Procedure Least Squares Means Source DF Sum of Squares Mean Square F Value Pr > F Adjustment for Multiple Comparisons: Tukey-Kramer Model A D E G <.0001 physact1 hdl1 lsmean number error b f h corrected total c r-square coeff var root mse mean least squares means for effect pr> It) for HO: LSMean(i)=LSMean(j) Standard Dependent Variable: HDL1 Parameter Estimate Error t Value Pr > |t) i/j 2 3 Intercept 49.74806801 B 0.54289412 91.63 <.0001 physact1 b>