Help with GLM Setup for Species and Year Effects in JMP

lazyamir — Sun, 27 Apr 2025 07:19:23 GMT

Hello,

For my thesis, I need to use a GLM model, but I am not sure if JMP is handling my data structure correctly.
I am examining how different factors, such as year and sponge species, affect sponge filtration efficiency. The issue is that I have two sponge species sampled in each year (only two years total), but only one of the species is shared between the years, while the other species is unique to a specific year.

I am unsure whether JMP correctly accounts for this situation in the model.
Any thoughts, advice, or suggestions would be greatly appreciated! :)

Thank you very much,
Amir

Re: Help with GLM Setup for Species and Year Effects in JMP

Ben_BarrIngh — Fri, 23 May 2025 10:48:13 GMT

Hi @lazyamir,

I think more information (or preferably the data set) would help in determining the best way to help. My recommendation would be to treat the sponge sample as a random effect as you have the species nested within year in this model (this can be achieved through 'Nest' option in Fit Model).

Thanks,

Ben

topic Help with GLM Setup for Species and Year Effects in JMP in Discussions

Help with GLM Setup for Species and Year Effects in JMP

Re: Help with GLM Setup for Species and Year Effects in JMP