Table 1.
Demographic and clinical characteristics
| Whole sample (N = 165) |
3T MRI subsample (n = 136) |
|||
|---|---|---|---|---|
| N | Mean (SD) / count (%) |
N | Mean (SD) / count (%) |
|
| Age, years | 165 | 69.1 (8.6) | 136 | 68.0 (8.3) |
| min - max | 45 - 88 | 45- 88 | ||
| Sex, men | 165 | 119 (72%) | 136 | 105 (77%) |
| Education, years | 165 | 13.6 (3.9) | 136 | 13.3 (4.0) |
| APOE, ε4 carriers | 159 | 69 (43%) | 131 | 59 (45%) |
| MMSE, total score | 164 | 22.9 (5.2) | 135 | 23.1 (5.4) |
| Visual hallucinations, presence | 162 | 89 (55%) | 133 | 75 (56%) |
| Cognitive fluctuations, presence | 157 | 131 (83%) | 128 | 112 (88%) |
| Parkinsonism, presence | 163 | 142 (87%) | 134 | 118 (88%) |
| Probable RBD, presence | 150 | 117 (78%) | 124 | 101 (81%) |
| Center | 165 | 136 | ||
| CMRR, n | 34 (21%) | 34 (25%) | ||
| Mayo Clinic, n | 68 (41%) | 68 (50%) | ||
| Motol University Hospital, n | 29 (17%) | - | ||
| VUmc, n | 34 (21%) | 34 (25%) | ||
Mean (standard deviation, SD) is listed for the continuous variables and count (%) for categorical variables. Abbreviations: 3T MRI = 3 tesla magnetic resonance imaging; APOE = Apolipoprotein E; MMSE = mini-mental state examination; RBD = rapid eye movement sleep behavior disorder; CMRR = Day Hospital of Geriatrics, Memory Resource and Research Centre (Strasbourg, France); VUmc = VU University Medical Center (Amsterdam, the Netherlands).