A consolidation of the concepts learnt the later half of the book is worked trough using this example.
A data frame with 189 observations on the following 10 variables.
indicator of birth weight less than 2.5kg
mother's age in years
mother's weight in pounds at last menstrual period
mothers race ("white", "black", "other")
smoking status during pregnancy
number of previous premature labours
history of hypertension
presence of uterine irritability
number of physician visits during the first trimester
birth weight in grams
Hosmer, D.W. and Lemeshow, S. (2001). Applied Logistic Regression. New York: Wiley.