Table 1.
Sample Characteristics by Dementia Etiology
| Variable | DLB (n = 384) | AD (n = 69) | PDD (n = 61) | p |
|---|---|---|---|---|
| Caregiver Characteristics | ||||
| Age, y | 60.8 (10.5) | 59.5 (10.4) | 63.3 (10.0) | 0.10 |
| Sex, % Women | 89.5 | 88.2 | 95.2 | 0.34 |
| Race, % White | 97.1 | 92.5 | 96.7 | 0.03 |
| Education, % High School Graduate | 99.2 | 98.5 | 98.4 | 0.39 |
| Relationship, % Spouse | 62.5 | 40.6a | 80.6c | < 0.001 |
| Primary caregiver, % | 88.1 | 89.9 | 88.3 | 0.91 |
| Frequency of contact, % > 4x/wk | 84.5 | 64.5a | 73.9c | 0.009 |
| Care Recipient Characteristics | ||||
| Age, y | 75.1 (9.3) | 79.3 (9.0)a | 72.9 (7.4) | < 0.001 |
| Sex, % Men | 67.9 | 38.2a | 86.9 | < 0.001 |
| Race, % White | 96.1 | 92.8 | 98.4 | 0.25 |
| Education, % High School Graduate | 87.2 | 81.1a | 95.1 | 0.03 |
| Lives with Respondent, % | 68.6 | 62.7 | 77.0c | 0.03 |
| Duration of Disease, y | 3.7 (2.5)b | 4.7 (2.9) | 4.8 (2.9) | 0.002 |
| CDR Sum of Boxes | 10.5 (4.3) | 10.1 (4.5) | 9.2 (4.0) | 0.11 |
| QDRS | 16.2 (6.7) | 15.1 (6.9) | 14.5 (6.3) | 0.11 |
| RMBPC Total | 21.4 (14.8) | 18.9 (12.9) | 20.6 (14.9) | 0.40 |
| Stage of Disease (CDR) | 0.16 | |||
| Mild, % | 32.8 | 50.8 | 40.4 | |
| Moderate, % | 28.4 | 29.5 | 29.7 | |
| Severe, % | 38.8 | 19.7 | 29.9 |
Means (SD) or % DLB, dementia with Lewy bodies; AD, Alzheimer’s disease; PDD, Parkinson’s disease dementia; CDR, Clinical Dementia Rating; QDRS, Quick Dementia Rating System; RMBPC, Revised Memory and Behavioral Problem Checklist Bold p-value signifies significance after correction for multiple comparisons (corrected p-value < 0.007 for caregiver characteristics, and corrected p-value < 0.005 for care recipient characteristics). Notes on Post-hoc analyses:
a
AD different from DLB and PDD;
b
DLB different from AD and PDD;
c
PDD different from AD and DLB.