Question
Question Posted 07/09/15:
How is APOE4 coded in the ADNI1 data set? Is it (0,1) or (0, 1, 2). If it is (0, 1) then is the presence of 2 a typo? If it is (0,1,2) then what do they mean?
Thank you.
How is APOE4 coded in the ADNI1 data set? Is it (0,1) or (0, 1, 2). If it is (0, 1) then is the presence of 2 a typo? If it is (0,1,2) then what do they mean?
Thank you.
Response posted 07/09/15 by Danielle:
If you are using the ADNIMERGE dataset, the APOE4 variable represents the number of E4 alleles, so 0, 1, and 2 are all allowable values.
