Table 1.

Characteristics of Down syndrome participants and controls

Characteristic	DS (all)	DS PiB-positive	DS PiB-negative	Controls
N	46	19	27	30
Mean age (y)	42.3 (8.73)	49.68 (6.45)	37.11 (5.95)	46.23 (9.75)
Age range (y)	28–65	39–65	28–48	30–64
Sex (male/female)	25/21	11/8	14/13	16/14
CAMDEX classification (stable, declining, dementia)	31/6/9	7/5/7	24/1/2	-
CAMCOG score	74.37 (20.01)	70.19 (22.98)	76.85 (18.03)	-
APOE genotype (e2/e3, e2/e4, e3/e3, e3/e4/missing)	8/2/20/10/6	4/1/6/5/3	4/1/14/5/3	-

Values presented in the table are either N, or in mean (standard deviation) form.