Table 1.

Demographics, CSF values and memory performance: Number of subjects (i.e., N); Age in years (mean and standard deviation); HDS score (mean and standard deviation); CSF levels of Aβ 1-42, T and P tau (mean and standard deviation); and proportions of primacy and non-primacy performance (mean and standard deviation).

N	47
Age	67.13 (6.23)
HDS	10.55 (11.01)
Aβ 1-42	269.45 (158.93)
T tau	296.02 (132.38)*
P tau	50.00 (23.78)
Primacy	0.64 (0.27)
Non-primacy	0.54 (0.17)

^*Due to an undetermined value, the N for T tau is 46.