Table 1 Baseline characteristics of the study population
| Â | All | Females | Males | Sig. for difference |
|---|---|---|---|---|
n (%) | M (SD) | n (%) | M (SD) | n (%) | M (SD) | p | |
Sex | 892 (100) | 672 (75.3) | 220 (24.7) | – |
Age at baseline | 74.5 (5.4) | 75.9 (5.6) | 70.5 (0.2) | *** |
Presence of APOE ɛ4a | 239 (27.8) | 176 (27.4) | 63 (28.9) | n.s. |
Educational attainmentb | *** | |||
 Primary | 529 (60.6) | 408 (62.4) | 121 (55.3) | – |
 Lower secondary | 207 (23.7) | 168 (25.7) | 39 (17.8) | – |
 Secondary/university | 137 (15.7) | 78 (11.9) | 59 (26.9) | – |
Previous depressionc, * | 260 (29.3) | 216 (32.3) | 44 (20.0) | *** |
One or more period(s) of longstanding stressd | 369 (47.3) | 273 (48.3) | 96 (44.0) | n.s. |
Satisfaction w. social situation (1–7)e | 2.6 (1.2) | 2.7 (1.2) | 2.5 (1.1) | * |
Chronic lonelinessf | 106 (12.1) | 91 (13.7) | 15 (6.8) | *** |
Self-esteem (1–7)g | 3.1 (1.1) | 3.3 (1.2) | 2.7 (1.0) | *** |
Developed dementia 2002–12 (t1) | 144 (16.1) | 124 (18.5) | 20 (9.1) | *** |
Developed dementia 2003–12 (t2) | 126 (14.4) | 111 (16.8) | 15 (7.0) | *** |
Developed dementia 2004–12 (t3) | 108 (12.6) | 95 (14.8) | 13 (6.1) | *** |
Developed dementia 2005–12 (t4) | 91 (10.9) | 78 (10.9) | 13 (6.1) | ** |
Developed dementia 2006–12 (t5) | 81 (9.8) | 70 (11.3) | 11 (5.2) | ** |