The negative regression slope β represents the improvement with age; the positive γ represents the poorer performance of boys. The model residual deviance is 2305 compared to 2635 for a model ignoring
File List Supplement_2.R (MD5: b05dd735edcbbea4272aef683b862de8)Description This supplement contains annotated R code for constructing profile likelihood confidence intervals, conducting goodness-of-f
