Table 1.

Crosssectional characteristics of Aβ2 plasma/serum studies.

Author	n=	% female	mean age	Depression Scale	Mean Score of Aβ42	% of Aβ42 difference between depressed and controls	ApoE4 status
Baba, 2012	606	58.0%	56.38(14.7)	HAM-D	2.5 pg/ml	−15.4%	Differences were observed in the whole sample and in non-carriers
Metti, 2012	988	55.20%	74	CES-D	33.9pg/ml	no difference	No differences in carriers or non-carriers
Moon, 2011	123	26%	76	GDS	18.9pg/ml	+1.71%	n/a
Blasko, 2010	331	56.50%	75.8	GDS	n/a	n/a	n/a
Kita, 2009	120	57.50%	55.8	HAM-D	3.3 pmol/l**	−2.1%	n/a
Sun, 2009	1060	76%	75.3	CES-D	18.8 pg/ml*	−12.3%	Differences were observed only in non-carriers
Sun, 2008	995	61%	75.3	CES-D	18.7 pg/ml*	−13.5%	n/a
Sun, 2007	324	75%	75	CES-D	16.9 pg/ml*	−37.2%	n/a
Qiao Qiu, 2006	515	77%	75.7	CES-D	33.1 pg/ml	−23.5%	n/a
Pomara, 2006	82	69.50%	75.3	HAM-D	14.51 pg/ml+	+30%	n/a

^*median used in measurements;

^**measurements from the elderly subgroup,

⁺LLMD subjects only