Table 2.
Study population from Wave 1 through Wave 5
| Variables | Baseline, Wave 1 (n=2,861) | Wave 2 (n=2,258) | Wave 3 (n=1,876) | Wave 4 (n=1,674) | Wave 5 (n=1,167) |
|---|---|---|---|---|---|
| Age (years) | 72.7 ± 6.5 | 75.1 ± 6.6 | 77.2 ± 6.1 | 78.8 ± 5.6 | 81.7 ± 5.1 |
| Female gender | 58.3 | 59.0 | 60.3 | 62.6 | 64.1 |
| Spanish speaking at interview | 78.0 | 81.4 | 72.4 | 84.6 | 82.6 |
| Education continuous (years) | 4.9 ± 3.9 | 4.8 ± 3.9 | 4.9 ± 3.9 | 4.9 ± 3.9 | 4.9 ± 3.8 |
| Education categories | |||||
| 0 years | 17.7 | 18.4 | 16.3 | 15.8 | 15.3 |
| 1–3 years | 25.5 | 26.0 | 26.0 | 26.2 | 26.7 |
| 4–6 years | 30.6 | 29.4 | 31.0 | 30.9 | 32.1 |
| 7–11 years | 16.5 | 16.8 | 16.9 | 16.8 | 16.2 |
| 12+ years | 9.7 | 9.4 | 9.8 | 10.3 | 9.7 |
| MMSE domains | |||||
| - Memory (0–6) | 5.2 ± 1.2 | 5.2 ± 1.1 | 4.8 ± 1.4 | 4.7 ± 1.6 | 4.4 ± 1.9 |
| - No-memory (0–24) | 19.4 ± 4.2 | 18.3 ± 4.4 | 17.1 ± 4.8 | 16.7 ± 5.2 | 16.1± 7.0 |
| Correlation between memory & no-memory domains | [0.36] a | [0.40] a | [0.46] a | [0.57] a | [0.77] a |
| Total MMSE (0–30) | 24.6 ± 4.9 | 23.5 ± 4.9 | 22.9 ± 5.6 | 21.6 ± 6.2 | 20.5 ± 8.6 |
MMSE=Mini-Mental State Examination. Data are presented as %, mean ± SD, or Pearson correlation [r].
a
P <.0001