Prostate Cancer Data
These data come from a study that examined the correlation between the level of prostate specific antigen and a number of clinical measures in men who were about to receive a radical prostatectomy. It is data frame with 97 rows and 9 columns.
Stamey, T.A., Kabalin, J.N., McNeal, J.E., Johnstone, I.M., Freiha, F., Redwine, E.A. and Yang, N. (1989) Prostate specific antigen in the diagnosis and treatment of adenocarcinoma of the prostate: II. radical prostatectomy treated patients, Journal of Urology 141(5), 1076--1083.
data(Prostate) attach(Prostate) pairs(Prostate, col = 1+svi, pch = gleason - 5, main = paste("Prostate data, n = ", nrow(Prostate))) detach() l1c.P <- l1ce(lcavol ~ ., data = Prostate) coef(l1c.P)[coef(l1c.P) != 0] ## only age, lcp, lpsa (+ intercept) summary(l1c.P)