Alzheimer’s Disease Neuroimaging Initiative

Question

Question Posted 01/19/16:
To whom it may concern,

I am currently using the ADNIMERGE.csv file to analyze longitudinal data. I have noticed that the age of each participant with multiple visits does not change over the visits. I

Is there an updated version of this file where the age value is updated for each patient's visit?

Thank you!

Response posted 01/25/16 by Danielle:

The ADNIMERGE file only includes baseline age. You can use the information in the ADNIMERGE file (baseline age (AGE) and difference from EXAMDATE to initial EXAMDATE (Years_bl)) to compute the age at each visit.

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