| polyps3 {HSAUR} | R Documentation |
Data from a placebo-controlled trial of a non-steroidal anti-inflammatory drug in the treatment of familial andenomatous polyposis (FAP).
data("polyps3")
A data frame with 22 observations on the following 5 variables.
sexfemale and male.treatmentplacebo and active.baselineagenumber3m
The data arise from the same study as the polyps data. Here,
the number of polyps after three months are given.
F. M. Giardiello, S. R. Hamilton, A. J. Krush, S. Piantadosi, L. M. Hylind, P. Celano, S. V. Booker, C. R. Robinson and G. J. A. Offerhaus (1993), Treatment of colonic and rectal adenomas with sulindac in familial adenomatous polyposis. New England Journal of Medicine, 328(18), 1313–1316.
S. Piantadosi (1997), Clinical Trials: A Methodologic Perspective. John Wiley & Sons, New York.
data("polyps3", package = "HSAUR")
plot(number3m ~ age, data = polyps3, pch = as.numeric(polyps3$treatment))
legend("topright", legend = levels(polyps3$treatment), pch = 1:2, bty = "n")