exp2 {expirest}

Stability related substance data of three batches

Description

A data set containing the related substance stability data (in % of label claim (LC)) of three batches of a drug product obtained over a 24 months period. A total of n = 24 independent measurements are available (corresponding to data shown in Table XI in LeBlond et al. (2011)).

Usage

data(exp2)

Format

A data frame with 48 observations and 3 variables:

Batch

Factor with levels b4, b5 and b8

Month

Numeric representing the time points of testing from the start (0 months) to the end (24 months) of the study.

Related

Numeric of the measured related substance levels in %LC

Source

See reference: Example data sets shown in Table XI.

References

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.

Examples

str(exp2)