Format
A data frame with 82 observations on the following 4 variables (3 independent variables and 1 dependent variable).
Source
Colice, G. L., Stukel, T. A., and Dain, B. (1989), Laryngeal Complications of Prolonged Intubation, Chest, No. 96, pp. 877-884.
Ibrahim, Joseph G. (1990). Incomplete Data in Generalized Linear Models. Journal of the American Statistical Association, Vol.85,