How are coefficient confidence intervals calculated in fitlme?

I'm having trouble finding the method by which fitlme calculates coefficient confidence intervals ("Upper" and "Lower" in model.Coefficients). Can anyone give me an answer (and ideally a reference for the method) to cite in the paper I'm using this for?

Answer 1

[Yoga]

Hi @Roisin McM!

I understand that you are facing an issue with finding the method by which fitlme calculates coefficient confidence intervals. Assuming a normal distribution, the confidence interval is typically calculated as: Coefficient Estimate ± (Z-critical value * Standard Error of the Coefficient Estimate).

You can refer to the following link for the entire documentation on fitlme funtion in MATLAB - https://www.mathworks.com/help/stats/fitlme.html.

I hope this helps resolve resolve your issue.