TABLE 1.
Baseline demographic characteristics and group differences (N = 850)
| CN (N = 451) | MCI (N = 289) | Dementia (N = 110) | P value * | |
|---|---|---|---|---|
| Age, years | 73.3 ± 8.2 | 71.1 ± 8.8 | 70.6 ± 10.2 | <.001 |
| Education, years | 17.0 ± 2.5 | 16.4 ± 3.1 | 15.7 ± 2.8 | <.001 |
| Female, n (%) | 268 (59%) | 128 (44%) | 45 (41%) | <.001 |
| White non‐Hispanic, n (%) | 346 (77%) | 238 (82%) | 90 (82%) | .303 |
| CDR total | 0 ± 0 | 0.5 ± 0.2 | 1.1 ± 0.4 | <.001 |
| MMSE | 29.1 ± 1.1 | 26.5 ± 2.9 | 22.5 ± 4.6 | <.001 |
| MoCA | 26.6 ± 2.3 | 22.4 ± 4.3 | 17.1 ± 5.2 | <.001 |
Abbreviations: CDR, Clinical Dementia Rating; CN, cognitively normal; MCI, mild cognitive impairment; MMSE, Mini‐Mental State Examination; MoCA, Montreal Cognitive Assessment.
Values are presented as means ± standard deviations unless otherwise indicated.
*
Based on differences between MCI and dementia relative to CN and estimated from t‐tests for continuous variables or Pearson's χ2 tests for categorical variables.