polyps3: Familial Andenomatous Polyposis
In HSAUR3: A Handbook of Statistical Analyses Using R (3rd Edition)

polyps3

R Documentation

Familial Andenomatous Polyposis

Description

Data from a placebo-controlled trial of a non-steroidal anti-inflammatory drug in the treatment of familial andenomatous polyposis (FAP).

Usage

data("polyps3")

Format

A data frame with 22 observations on the following 5 variables.

gender: a factor with levels female and male.
treatment: a factor with levels placebo and active.
baseline: the baseline number of polyps.
age: the age of the patient.
number3m: the number of polyps after three month.

Details

The data arise from the same study as the polyps data. Here, the number of polyps after three months are given.

Source

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.

Examples


  data("polyps3", package = "HSAUR3")
  plot(number3m ~ age, data = polyps3, pch = as.numeric(polyps3$treatment))
  legend("topright", legend = levels(polyps3$treatment), pch = 1:2, bty = "n")

HSAUR3 documentation built on Sept. 11, 2024, 8:37 p.m.