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Characteristics of the study population at baseline
| Total | Non-demented (n=148, 25.9%) |
Demented (n=52, 74.1%) |
|
|---|---|---|---|
| Mean age (± standard deviation) | 54.7 ± 3.8 | 54.2 ± 3.6 | 56.0 ± 3.9 |
| Sex (% male) | 61% | 60% | 64% |
| Level of mental retardation | |||
| mild | 22% | 21% | 27% |
| moderate | 42% | 45% | 35% |
| severe | 21% | 22% | 19% |
| profound | 7% | 5% | 10% |
| unknown | 9% | 7% | 10% |
| Mean score on Brief Praxis Test at screening (± standard deviation) | 63.4 ± 13.6 | 64.6 ± 12.6 | 60.6 ± 15.6 |
