Nearly 50% longer than the previous edition, this second edition covers new topics for fitting and interpreting models included in Stata 9. Many of the interpretation techniques have been updated to include interval as well as point estimates. The book begins with an excellent introduction to Stata and then provides a general treatment of estimation, testing, fit, and interpretation in this class of models. It covers binary, ordinal, nominal, and count outcomes in separate chapters. The final chapter discusses how to fit and interpret models with special characteristics, such as ordinal and nominal independent variables, interaction, and nonlinear terms.