Table 1.
Baseline characteristics of individuals with MCI, interviewed and not interviewed at the follow-up
| Baseline characteristics | All individuals with MCI (n = 655) | Interviewed, (n = 362) | Not interviewed, (n = 293) | P value |
|---|---|---|---|---|
| Gender | ||||
| Women, n (%) | 366 (55.9) | 206 (56.9) | 160 (54.6) | .556 |
| Age, mean ± SD | 74.9 ± 8.5 | 74.4 ± 7.8 | 75.5 ± 9.2 | .104 |
| Education level | ||||
| Less than primary school | 52 (7.9) | 24 (6.6) | 28 (9.6) | .287 |
| Primary school | 113 (17.3) | 55 (15.2) | 58 (19.8) | |
| Middle school | 162 (24.7) | 94 (26.0) | 68 (23.2) | |
| High school | 168 (25.6) | 96 (26.5) | 72 (24.6) | |
| College and above | 160 (24.4) | 93 (25.7) | 67 (22.9) | |
| Medical history | ||||
| Hypertension, n (%) | 393 (60.0) | 214 (59.1) | 179 (61.1) | .608 |
| Diabetes mellitus, n (%) | 117 (17.9) | 60 (16.6) | 57 (19.5) | .339 |
| Stroke, n (%) | 117 (17.9) | 64 (17.7) | 53 (18.1) | .892 |
| Heart disease, n (%) | 253 (38.6) | 136 (37.6) | 117 (39.9) | .537 |
| Life habits | ||||
| Smoking, n (%) | 77 (11.8) | 41 (11.3) | 36 (12.3) | .704 |
| Drinking, n (%) | 49 (7.5) | 28 (7.7) | 21 (7.2) | .784 |
| APOE ε4 positive, n (%) | 115 (19.9)∗ | 63 (19.4)† | 52 (20.5)‡ | .759 |
| MMSE, mean ± SD | 26.4 ± 2.9 | 26.7 ± 2.8 | 26.1 ± 3.0 | .009 |
| MCI type | ||||
| aMCI-SD, n (%) | 272 (41.5) | 156 (43.1) | 116 (39.6) | .422 |
| aMCI-MD, n (%) | 165 (25.2) | 82 (22.7) | 83 (28.3) | |
| naMCI-SD, n (%) | 159 (24.3) | 91 (25.1) | 68 (23.2) | |
| naMCI-MD, n (%) | 59 (9.0) | 33 (9.1) | 26 (8.9) | |
Abbreviations: MCI, mild cognitive impairment; aMCI-SD, amnestic mild cognitive impairment single domain; aMCI-MD, amnestic mild cognitive impairment multiple domains; naMCI-SD, non-amnestic mild cognitive impairment single domain; naMCI-MD, non-amnestic mild cognitive impairment multiple domains; MMSE, mini-mental state examination; APOE, apolipoprotein.
∗
115/578.
†
63/324.
‡
52/254.