Table 1.
Variable | AA | NHW | HIW | Overall | p-value |
---|---|---|---|---|---|
% Female (n= 498) | 71.0% a | 53.4% a, c | 68.9% c | 62.7% | < 0.001 |
% CDR >1 (n= 498) | 35.9% b | 46.6% | 52.7% b | 45.6% | 0.017 |
NPIQ-Total CDR Early (sd) (n= 270) | 3.21(2.9) | 2.74(2.3)c | 3.69(2.5)c | 3.13(2.6) | 0.044 |
NPIQ-Total CDR Late (sd) (n= 227) | 3.94(2.5) | 3.88(2.9)c | 5.05(2.5)c | 4.30(2.7) | 0.010 |
AAE (sd) (n= 399) | 77.9 (9.4) | 78.9 (9.7) | 80.3 (9.3) | 79.2 (9.5) | 0.111 |
AOO (sd) (n= 361) | 72.3 (9.9) | 73.5 (8.9) | 74.0 (9.5) | 73.4 (9.2) | 0.563 |
Education (sd) (n= 389) | 12.0 (3.1) a, b | 13.6 (3.5) a, c | 10.2 (4.6) b, c | 12.4 (3.9) | < 0.001 |
= Difference between AA and NHW p < 0.05;
= Difference between AA and HIW p < 0.05;
= Difference between NHW and HIW p < 0.05;
AA: African American; AAE: age at exam; AOO: age of onset; CDR Early: Clinical Dementia Rating scale early stage (CDR global score <1); CDR Late: Clinical Dementia Rating scale late stage (CDR global score >= 1); HIW: Hispanic White; NHW: Non-Hispanic White;NPI-Q Total: Neuropsychiatric Inventory Questionnaire total score; sd = standard deviation; n: sample size.