Table 1

Demographic and cognitive characteristics of the study population

PS1 mutation present (n = 17)PS1 mutation absent (n = 16)p Value
Values are mean (SD) or n (%).
BDI, Beck depression inventory; MMSE, mini-mental state examination; PS1, presenilin-1; WAIS, Wechsler adult intelligence scale.
Age (years)30.8 (1.87)29.1 (2.04)0.558
Education (years)11.6 (0.65)12.5 (0.81)0.418
Number with subjective memory complaints9 (53%)9 (56%)0.583
BDI score14.4 (3.10)6.5 (1.66)0.017*
Number with BDI score ⩾136 (35%)4 (25%)0.397
Number having sought help from a psychiatric professional4 (24%)2 (12.5%)0.616
MMSE score28.0 (0.31)29.4 (0.18)0.001
Trails making test–part B, time (s)125.3 (13.33)72.8 (5.28)0.001
Wechsler memory scale, associative learning subtest–immediate recall16.0 (0.75)18.2 (0.53)0.027
WAIS block design31.7 (1.79)36.7 (1.55)0.044