ABSTRACT
Logistic regression is a technique which has been popular with health researchers for a long time, and is becoming increasingly popular within psychology (especially in health and medical psychology). It is similar in many ways to discriminant function analysis (see Chapter 4), in that it is concerned with predicting group membership from a set of variables. Its statistical calculation is more like multiple regression, however. It enjoys one major advantage over discriminant analysis, which is that it can deal with any kind of variables – so a lot of the assumptions about data do not apply.
