70 mln people have access to basic Personal Health Records. But when Aetna and the Financial Planning Association surveyed more than 2,100 adults 18 and older, 64% said they do not know or are unsure about what a PHR is. Among the group of Americans who are familiar with PHRs, 83% acknowledge that the online record personalizes their experience with their health care provider, but only 11% currently use one to keep track of their medical and health history.