Table 1.
Demographics.
| Diagnosis | Number | Age | Education | % Right handed | % Male | % Depression | Average CMI (years) | |
|---|---|---|---|---|---|---|---|---|
| Dementia with Lewy bodies | Mean | 22 | 72.3 | 12.1 | 72.7 | 77.3 | 50.0 | 0.09 (−1.5 to 1) |
| SD | 6.6 | 2.7 | 0.62 | |||||
| Parkinson’s disease dementia | Mean | 25 | 71.5 | 14.1 | 84.0 | 64.0 | 45.5 | 7.9 (1.06 to 23) |
| SD | 6.0 | 3.0 | 6.5 | |||||
| p-Value | 0.67 | 0.02, 0.10a | 0.28b | 0.32b | 0.87b | |||
Continuous variables were compared by Student’s t-test.
There was a trend towards increased education in Parkinson’s dementia group, but this did not survive correction for multiple comparisons using a false-discovery-rate approacha. Categorical variables were compared by Pearson chi-squareb. Patients with diagnosis of parkinsonism more than 1.0 years before diagnosis of dementia [Cognitive-Motor Interval (CMI) > 1] were classified as Parkinson’s disease dementia.