Table 1 Demographic characteristics and core symptoms in the full cohort, DLB and Alzheimer’s disease
Full cohort (n = 14,329) | DLB (n = 617) | AD (n = 13,712) | p-value | |
|---|---|---|---|---|
Sociodemographic characteristics | ||||
Age at first referral in years (mean, SD) | 80.5 (8.6) | 76.9 (10.2) | 80.6 (8.5) | <0.001 |
Age at first dementia diagnosis in years (mean, SD) | 81.8 (8.0) | 78.7 (9.1) | 82.0 (7.9) | <0.001 |
Female gender (%) | 63.4% | 49.0% | 64.0% | <0.001 |
Non-White ethnicity (%) | 27.8% | 26.4% | 27.9% | 0.434 |
Married or cohabiting (%) | 35.1% | 42.6% | 34.8% | <0.001 |
Core symptoms | ||||
Visual hallucinations (%) | 19.6% | 83.1% | 16.7% | <0.001 |
REM sleep behaviour disorder (%) | 10.0% | 26.6% | 9.3% | <0.001 |
Fluctuations (%) | 32.2% | 74.7% | 30.3% | <0.001 |
Parkinsonism (%) | 21.5% | 62.1% | 19.7% | <0.001 |
Number of core symptoms recorded | <0.001 | |||
No core symptom | 46.2% | 3.9% | 48.1% | |
1 core symptom | 32.3% | 13.0% | 33.2% | |
2 core symptoms | 14.6% | 30.4% | 13.9% | |
3 core symptoms | 5.7% | 38.1% | 4.2% | |
4 core symptoms | 1.2% | 14.6% | 0.6% | |
