Question Posted 03/11/15:
Where can i find the patient's family identifier (FID) whose i know the subject identifier (Subject ID)?

Thank you in advance,
best regards.
Response posted 03/11/15 by Jessica Yaros, IDA:
There are no family identifiers in the ADNI study. AD family history is contained in the Family History Questionnaire table, however family members are not signed IDs.