A data set containing the potency stability data (in % of label claim (LC))
of five batches of a drug product obtained over a 24 months period. A total
of \(n = 53\) independent measurements are available (corresponding to
data shown in Tables IV, VI and VIII in LeBlond et al. (2011)). Data in
Table IV (batches b2, b5 and b7) are compatible with a
common intercept / common slope (cics) model, data in Table VI (batches
b3, b4 and b5) with a different intercept / common slope
(dics) model and data in Table VIII (bathes b4, b5 and
b8) with a different intercept / different slope (dids) model.
data(exp1)A data frame with 53 observations and 3 variables:
Factor with levels b2, b3, b4, b5,
b7 and b8
Numeric representing the time points of testing from the start (0 months) to the end (24 months) of the study.
Numeric of the measured potency values in %LC
LeBlond, D., Griffith, D. and Aubuchon, K. Linear Regression 102: Stability Shelf Life Estimation Using Analysis of Covariance. J Valid Technol (2011) 17(3): 47-68.