exp4: Stability data of 4 batches

In expirest: Expiry Estimation Procedures

Stability data of 4 batches

Description

A data set containing the concentration data (mg/kg) of four batches obtained over a 24 months period of a drug product. A total of n = 36 independent measurements are available (corresponding to the data set Reliability/Stability.jmp in JMP(R) 12 Reliability and Survival Methods manual).

Usage

data(exp4)

Format

A data frame with 36 observations and 3 variables:

Batch

Factor with levels 1_11, 2_12, 3_13 and 4_14.

Month

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

Conc

Numeric of the measured concentrations in mg / kg.

Source

See reference: Example data set (Stability.jmp) used in chapter Stability Analysis, p. 174-176.

References

SAS Institute Inc. 2015. JMP(R) 12 Reliability and Survival Methods. Cary, NC: SAS Institute Inc.

Examples

str(exp4)

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