Dear all,

I am currently working on a mixed model with incorporation of knots at specific timepoints to compare the course over time between 5 different groups (cohorts).
Yet, I cannot figure out how I can retrieve the estimates of the intercept at these knots. And how to compare the intercept at these knots between the 5 groups.

Can anyone help me with this?

My mixed model:
mixed DAS28ESR i.cohort##c.years c.Age_incl i.sex ||EACNUMM: c.years, covariance(unstructured) reml

In which DAS28ESR is a measure for disease activity (continuous) and EACNUMM are the individuals.

Thanks in advance!

Kind regards,
Marloes