Table 1.
Participant characteristics
| Characteristic | Duke ADRC (N=511) M (SD) or % |
UCD ADC (N=620) M (SD) or % |
WHICAP (N=2045a) M (SD) or % |
NCODE (N=578b) M (SD) or % |
|---|---|---|---|---|
| Sex (1=Female) | 60.9 | 58.6 | 67.4 | 68.2 |
| Age (yrs.) | 72.1 (9.0) | 75.8 (7.5) | 77.0 (7.1) | 69.8 (7.0) |
| Race/Ethnicity | ||||
| Black or African American | 22.9 | 23.9 | 34.3 | 11.6 |
| White | 77.1 | 48.7 | 31.2 | 88.4 |
| Hispanic or Latino | – | 23.2 | 34.4 | – |
| Other | – | 4.2 | – | – |
| Education (yrs.) | 15.5 (2.8) | 13.1 (4.3) | 10.2 (4.9) | 14.0 (2.9) |
| Tested in English (vs. Spanish) | 100.0 | 88.3 | 65.3 | 100.0 |
| Clinical Dementia Rating Scalec | ||||
| 0 | 61.1 | 40.4 | 70.1 | – |
| 0.5 | 32.1 | 44.2 | 19.7 | – |
| 1–3 | 6.8 | 15.4 | 10.2 | – |
a
Includes only Whites, Blacks or African Americans tested in English and Hispanics tested in Spanish.
b
MADRS data were available for 389 participants.
c
NCODE did not administer the Clinical Dementia Rating Scale.
Note: Duke ADRC=Joseph and Kathleen Bryan Alzheimer’s Disease Research Center at Duke University.
UCD ADC=Spanish and English Neuropsychological Assessment Scales at the University of California, Davis’ Alzheimer’s Disease Center. WHICAP=Washington Heights/Hamilton Heights-Inwood Columbia Aging Project. NCODE=Neurocognitive Outcomes of Depression in the Elderly Study.