Comparing the slope of a exponential 3P model.

[#1]

Hi, I am trying to compare three exponential 3P curves for my stability study. Is there a way in JMP where I can do this such as Parallelism test?

[#2]

Have you tried the approaches described in the documentation?

[#3]

Hi Mark,

Yes, I did that but there is no parallelism test option available for me. I am using JMP 16.1.

I have include a JMP file for the current situation I have. Please note that I have remove some information due to confidentiality.

[#4]

This data appears to be from a stability study. Here is a plot of the data you provided:

stability.JPG

It exhibits a linear degradation path. There seems to be a data anomaly on day 7 for all lots. A logistic model is not suitable for this case.

[#5]

Yes, you are correct that it is a stability curve. Do you have a recommendation I can work on so that I can perform a parallelism test?

[#6]

Please see the chapter for the Degradation platform for general background information and orientation. There is a section near the end about stability analysis.

[#7]

Thank you so much.