Table 1.
Comparisons of Demographic Characteristics for the 1,463 Participants Included in This Study, 265 Participants Lost to Follow-up, 210 Participants Excluded with Baseline Global Cognitive Scores in the Bottom 10% and 62 Participants with Physical Disabilities at Baseline, n (%), or Mean ± SD (standard deviation)
| Included n = 1,463 | Lost to Follow-up n = 265 | Cognitive Impairment n = 210 | Physical Disabily n = 62 | p value* | p value† | |
| Age, y | 71.0±5.0 | 75.0±6.5 | 71.5±4.9 | 74.3±5.9 | <.001 | <.001 |
| Education, n (%) | <.001 | .49 | ||||
| >5 y | 189 (12.9) | 17 (6.4) | 5 (2.4) | 6 (9.7) | ||
| 1–5 y | 443 (30.3) | 63 (23.8) | 14 (6.7) | 22 (35.5) | ||
| No school | 831 (56.8) | 185 (69.8) | 191 (90.9) | 34 (54.9) | ||
| Consume alcohol, n (%) | 675 (46.2) | 108 (40.2) | 58 (27.6) | 31 (50) | <.001 | .92 |
| Smoking, n (%) | 725 (49.6) | 116 (43.8) | 51 (24.4) | 36 (58.1) | <.001 | .87 |
| Body mass index | 22.2±3.5 | 21.5±3.5 | 20.8±3.2 | 22.4±3.9 | <.001 | <.01 |
| APOE ε4 carriers, n (%) | 240 (16.4) | 43 (16.2) | 44 (21.0) | 6 (9.7) | .17 | .70 |
| Cognitive domains (standardized score ranges) | ||||||
| Global cognition (−.9, 1.3) | .3±.7 | −.4 ± 1.2 | −1.8 ± .6 | .1 ± .7 | <.001 | <.001 |
| Episodic memory (−2.2, 3.4) | .2±.8 | −.3±.8 | −.7±.6 | −.04±.8 | <.001 | <.001 |
| Language (−2.0, 5.3) | .2±1.0 | −.4±1.0 | −.7±.8 | −.2±.8 | <.001 | <.001 |
| Executive function (−2.6, 1.5) | .2±.9 | −.3±1.1 | −1.0±1.0 | −.1±.9 | <.001 | <.001 |
Notes: *p values are for testing overall differences among the four groups.
†p values are for testing the difference between included group and lost to follow up group.