Table 1.

Characteristics of subjects who underwent lumbar puncture.

	CDR 0, <65	CDR 0, ≥65	CDR 0.5	CDR 1+
n =	70	55	26	17
Male	29%	28%	54%	47%
Female	71%	72%	46%	53%
Age*	54 ± 6	76 ± 8	75 ± 8	76 ± 6
ε2 freq.	0.11	0.13	0.06	0.03
ε3 freq.	0.64	0.73	0.56	0.74
ε4 freq.	0.25	0.14	0.38	0.24

*Age is mean ± standard deviation