| ncgsW {LMMstar} | R Documentation |
Data From National Cooperative Gallstone Study (Wide Format)
Description
Data from the National Cooperative Gallstone Study (NCGS), a randomized study where the level of serum cholesterol was measured at baseline and after intake of high-dose chenondiol (750mg/day) or placebo. This dataset is in the wide format (i.e. one line per patient).
-
group: treatment group (highdose or placebo). -
id: patient identifier. -
cholest1: cholesterol measurement at baseline (before treatment). -
cholest2: cholesterol measurement at 6 months (after treatment). -
cholest3: cholesterol measurement at 12 months (after treatment). -
cholest4: cholesterol measurement at 20 months (after treatment). -
cholest5: cholesterol measurement at 24 months (after treatment).
Usage
data(ncgsW)
References
Grundy SM, Lan SP, Lachin J. The effects of chenodiol on biliary lipids and their association with gallstone dissolution in the National Cooperative Gallstone Study (NCGS). J Clin Invest. 1984 Apr;73(4):1156-66. doi: 10.1172/JCI111301.