Table 1 Baseline descriptive statistics
Variable | Total (n = 16,683) | Self-ECog positive (n = 7,378) | Self-ECog negative (n = 9,305) | t or x2, p |
|---|---|---|---|---|
Age | 69.07 ± 7.34 (55–90) | 69.21 ± 7.69 (55–90) | 68.53 ± 7.29 (55–90) | -5.85, < 0.001 |
Gender (female) | 12,018 (72.0%) | 5247 (71.1%) | 6771 (72.8%) | 5.48, 0.019 |
Years of education | 16.66 ± 2.26 (6–20) | 16.44 ± 2.32 (6–20) | 16.64 ± 2.28 (6–20) | 5.70, < 0.001 |
Race: Latinx | 969 (5.8%) | 488 (6.6%) | 481 (5.2%) | 15.44 < 0.001 |
Race: Non-Latinx African American | 364 (2.2%) | 159 (2.2%) | 205 (2.2%) | 0.02, 0.875 |
Race: Non-Latinx White | 14,815 (88.8%) | 6470 (87.7%) | 8345 (89.7%) | 16.19, < 0.001 |
Race: All other | 535 (3.2%) | 261 (3.5%) | 274 (2.9%) | 4.47, 0.035 |
Subjective memory concern | 7263 (43.5%) | 5062 (68.6%) | 2201 (23.7%) | 3381.4, < 0.001 |
GDS | 2.37 ± 2.79 (0–14) | 3.71 ± 3.37 (0–14) | 1.70 ± 2.22 (0–14) | -42.68, < 0.001 |
Family history of AD | 7289 (43.7%) | 3288 (44.6%) | 4001 (43.0%) | 4.04, 0.044 |
AD medication use | 219 (1.3%) | 151 (2.1%) | 68 (0.7%) | 53.99, < 0.001 |
Self-reported MCI | 1494 (9.0%) | 1231 (16.7%) | 263 (2.8%) | 967.63, < 0.001 |
Self-reported AD | 206 (1.2%) | 155 (2.1%) | 51 (0.6%) | 80.09, < 0.001 |
Self-reported dementia | 272 (1.6%) | 209 (2.7%) | 63 (0.7%) | 100.84, < 0.001 |
Self-reported any impairment | 1550 (9.3%) | 1270 (17.2%) | 280 (3.0%) | 983.47, < 0.001 |
Self-ECog | 1.39 ± 0.42 (1–4) | 1.76 ± 0.46 (1.31–4) | 1.14 ± 0.10 (1–1.31) | -114.22, < 0.001 |
SP-ECog | 1.27 ± 0.37 (1–4) | 1.44 ± 0.50 (1–3.75) | 1.20 ± 0.29 (1–4) | -16.22, < 0.001 |
PAL FAMS | 11.71 ± 4.22 (0–20) | 11.29 ± 4.33 (0–20) | 12.05 ± 4.11 (0–20) | 11.44, < 0.001 |
PAL TEA | 44.83 ± 29.43 (0–113) | 47.81 ± 29.86 (0–113) | 42.47 ± 28.86 (0–113) | -11.65, < 0.001 |