Table 1.
Subjects’ characteristics by group (incident dementia, incident MCI and cognitively normal subjects). Information was collected at the time of diagnosis for the dementia and MCI subjects and at the 2007 evaluation for the normal subjects
| SUBJECTS’ CHARACTERISTICS | INCIDENT DEMENTIA (N = 136) | INCIDENT MCI (N = 255) | COGNITIVELY NORMAL (N = 1168) | P -VALUE |
|---|---|---|---|---|
| Years of follow-up (mean, SD) | 4.95 (2.12) | 5.69 (2.29) | 5.97 (1.91) | <0.001 |
| Mean age, (SD) | 83.1 (7.8) | 82.1 (5.8) | 80.3 (4.4) | <0.001 |
| Female, N (%) | 103 (75.7%) | 203 (79.6%) | 748 (64.0%) | <0.001 |
| Have education, N, (%) | 16 (11.8%) | 17 (6.7%) | 193 (16.5%) | <0.001 |
| Mean BMI, (SD), Female | 21.1 (3.7) | 21.0 (4.2) | 22.6 (4.6) | <0.001 |
| Mean BMI, (SD), Male | 19.5 (4.4) | 20.2 (3.1) | 20.9 (3.9) | |
| Drink alcohol, N, (%) | ||||
| Current | 12 (8.8%) | 22 (8.6%) | 124 (10.6%) | 0.554 |
| Past | 28 (20.6%) | 51 (20.0%) | 268 (23.0%) | |
| Never | 96 (70.6%) | 182 (71.4%) | 776 (66.4%) | |
| Smoking, N, (%) | ||||
| Current | 19 (14.0%) | 37 (14.5%) | 134 (11.5%) | 0.014 |
| Past | 62 (45.6%) | 82 (32.2%) | 391 (33.5%) | |
| Never | 55 (40.4%) | 136 (53.3%) | 643 (55.0%) | |
| History of: | ||||
| Cancer, N, (%) | 8 (5.88%) | 10 (3.92%) | 35 (3.00%) | 0.188 |
| Hypertension, N, (%) | 124 (91.2%) | 223 (87.5%) | 1039 (89.0%) | 0.532 |
| Diabetes, N, (%) | 2 (1.47%) | 16 (6.27%) | 44 (3.77%) | 0.052 |
| Heart attack, N, (%) | 24 (17.7%) | 58 (22.8%) | 200 (17.1%) | 0.106 |
| Stroke, N, (%) | 9 (6.62%) | 8 (3.14%) | 33 (2.83%) | 0.059 |
| Depression, N, (%) | 33 (24.3%) | 53 (20.8%) | 250 (21.4%) | 0.706 |