Table 1.
Demographic characteristics of study sample with 2- to 3-year follow-up
| Normal cognition (n = 84) | Amnestic impairment (n = 26) | Nonamnestic impairment (n = 52) | Mixed cognitive impairment (n = 56) | F value or χ2 value | |
|---|---|---|---|---|---|
| Age, years | 75.63 ± 4.9 | 76.73 ± 6.3 | 76.87 ± 5.7 | 77.93 ± 5.9 | 1.94 |
| Education, years | 14.12 ± 3.7a | 13.96 ± 4.6a,b | 12.42 ± 4.0a,b | 11.71 ± 4.1b | 4.88∗∗∗ |
| Gender: female, % | 72.6 | 50 | 80.8 | 38.2 | 26.84∗∗∗ |
| Language: English, % | 65.5 | 57.7 | 55.8 | 54.5 | 2.14 |
| Follow-up, months | 36.72 ± 2.1a | 31.04 ± 6.7b | 31.63 ± 6.7b | 31.82 ± 5.8b | 16.35∗∗∗ |
| Baseline MMSE | 27.55 ± 2.0a | 26.81 ± 3.0a,b | 26.06 ± 2.4a,b | 25.44 ± 3.3b | 8.00∗∗∗ |
Means with different alphabetic superscripts are statistically significant at p ≤ 0.05 by the Scheffé procedure.
∗∗∗
p ≤ 0.001.