The new book by Vittinghoff et al. (2005) is reviewed.

After a logistic regression model has been fitted, a global test of goodness of fit of the resulting model should be performed. A test that is commonly used to assess model fit is the Hosmer-Lemeshow test, which is available in Stata and most other statistical software programs. However, it is...

The log-binomial model (the generalized linear model with binomial errors and log link) makes it possible to directly estimate the relative risk from cohort follow-up data, or the prevalence ratio from cross-sectional data, with adjustment for confounders. One of the problems with the use of...

Testing goodness of fit is an important step in evaluating a statistical model. For binary logistic regression models, the Hosmer–Lemeshow goodnessof- fit test is often used. For multinomial logistic regression models, however, few tests are available. We present the mlogitgof command, which...