Table 1 Sociodemographic, genetic, mood, and SCDplus features descriptive data in the whole sample

N

2098

319

253

Age, mean (SD)

55.41 (6.62)

55.62 (6.22)

59.10 (7.12)*^,**

Education, mean (SD)

13.41 (3.52)

13.38 (3.55)

12.83 (3.41)*

Females, n (%)

1316 (62.7%)

218 (68.3%)

154 (60.9%)

GADS—anxiety, mean (SD)

0.49 (1.07)

0.92 (1.51)*

0.90 (1.41)*

GADS—depression, mean (SD)

0.11 (0.52)

0.35 (0.93)*

0.44 (1.07)*

 Worry about the decline

165 (51.7%)

223 (88.1%)**

 Change in the last 2 years

179 (56.1%)

233 (92.1%)**

 Age > 60 years

62 (19.4%)

133 (52.6%)**

 Confirmation by informant^a

37 (11.6%)

122 (48.2%)**

 APOE ε4 carriers

731 (34.8%)

52 (16.3%)^*

144 (56.9%)*^,**