Hi, Can you please verify if the variables to use for getting clinical diagnostic information for each individual in the ROSMAP cohort study are 'dcfdx' and 'cogdx'. These columns are blank for 1352 and 437 individuals respectively. For ex: projid '402800' had dcfdx as blank, and cogdx as 4. Is it right to say that this individual belongs to AD group? Should I be looking at any other clinical variable as well? Thanks Sharvari