P2‐617: MEMORY RESERVE MODERATES THE ASSOCIATION BETWEEN A NEUROANATOMICAL MEASURE OF AD RISK AND GLOBAL COGNITIVE DECLINE IN THE WOMEN'S HEALTH INITIATIVE MEMORY STUDY. (1st July 2006) - Petkus, Andrew J.; Espeland, Mark A.; Casanova, Ramon; Wang, Xinhui; Younan, Diana; Rapp, Stephen R.; Chui, Helena C.; Hayden, Kathleen M.; Gatz, Margaret; Gaussoin, Sarah A.; Barnard, Ryan; Saldana, Santiago; et al.