. Author manuscript; available in PMC: 2013 Oct 25.

Published in final edited form as: Arch Neurol. 2012 Dec;69(12):10.1001/archneurol.2012.18107. doi: 10.1001/archneurol.2012.18107

Table 2.

36-hr mean and standard deviation (SD) for plasma Aβ (Aβ42 and Aβ40) in three groups. YNC group had lower levels of plasma Aβ42 and Aβ40 compared to the other two groups.

Group	Plasma Aβ42		Plasma Aβ40
	36-hr mean	36-hr SD	36-hr mean	36-hr SD
YNC (N=10)	6.9±1.8 pM	1.0±0.7 pM	39.1±8.7 pM	4.7±2.7 pM
Amyloid − (N=8)	8.8±2.4 pM^**	0.6±0.3 pM	55.0±10.2 pM^**	4.0±1.4 pM
Amyloid + (N=12)	9.9±2.6 pM^**	0.7±0.3 pM	55.5±9.0 pM^**	3.8±1.3 pM

Values presented are mean±SD. YNC group was set as the reference group for statistical comparisons. Statistically significant differences were marked as

^**

(p<0.01)

*(p<0.05).