Question
Question Posted 03/16/25:
In my R dataset, there is a column named VISCODE, which has values in the format (m0, m6, m12, etc.), even for data related to ADNI2. Does this column represent VISCODE2? How can I verify this, as it is crucial for accurately merging the data
In my R dataset, there is a column named VISCODE, which has values in the format (m0, m6, m12, etc.), even for data related to ADNI2. Does this column represent VISCODE2? How can I verify this, as it is crucial for accurately merging the data
Response posted 03/16/25 by Danielle:
If you are using the ADNIMERGE dataset, then yes, VISCODE is the same as VISCODE2 in other datasets. You should note that ADNIMERGE VISCODE=bl combines information from the screening visit and the baseline visit.
