Table 1. Demographics.

	Aβ (−)	Aβ (+)	p
n (male/female)	97 (42/55)	116 (40/76)	0.188
age	71.8±10.2	72.7±10.0	0.515
age range	43 – 88	48 – 97
MMSE*	24.0±6.8	20.6±7.5	0.003

± denotes standard deviation. *MMSE were available for 153 patients. χ²-test for sex ratio and t-test (bilateral) for age and MMSE were executed.