A data set from Oehlert (2000) \emph{A First Course in Design and Analysis of Experiments}, New York: W. H. Freeman. Data modeled after example of Moses, L.~E. (1987). ``Analysis of {B}ernoulli data from a $2^5$ design done in blocks of size four.'' In C.~Mallows (Ed.), {\em Design, Data, and Analysis}, pp. 275--290. New York: Wiley. Columns are complaint (drugs or STD), age (14 or 17), length of time known (<1 or >5), maturity (immature or mature), and fraction of doctors who maintain confidentiality.