Hi Emma,

yes, you can use these subjects. In fact for linear mixed effects models it makes even sense to include subjects that have only a single time point (if that is the small minority of course). Simply follow the same steps: cross for all time points, base (even if you include only a single time point here) and then long.

Best, Martin

On 09/22/2014 09:35 AM, Emma Thompson wrote:
Hi Freesurfers,
I'm conducting a longitudinal analysis but have several subjects with a few missing time points. The paradigm contained 4 time points in total, a baseline that occurred prior to any treatment and 3 post-treatment time points. All my subjects have baseline time points. However, a few subjects have a missing post-treatment time point. Can I still use these subjects in my longitudinal analysis even though 1 of the 3 post-treatment time points are missing?

Thanks in advance for your help!


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-- 
Dr. Martin Reuter

Instructor in Neurology
  Harvard Medical School
Assistant in Neuroscience
  Dept. of Radiology, Massachusetts General Hospital
  Dept. of Neurology, Massachusetts General Hospital
Research Affiliate
  Computer Science and Artificial Intelligence Lab,
  Dept. of Electrical Engineering and Computer Science,
  Massachusetts Institute of Technology

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