Factor structure of the National Alzheimer's Coordinating Centers uniform dataset neuropsychological battery: an evaluation of invariance between and within groups over time.
Hayden KM, Jones RN, Zimmer C, Plassman BL, Browndyke JN, Pieper C, Warren LH, Welsh-Bohmer KA. Factor structure of the National Alzheimer's Coordinating Centers uniform dataset neuropsychological battery: an evaluation of invariance between and within groups over time. Alzheimer Dis Assoc Disord. 2011 Apr-Jun; 25(2):128-37.