Screen Reader Mode Icon Check SCREEN READER MODE to make this survey compatible with screen readers. Question Title 1. What is the most common form of dementia? Vascular dementia Frontotemporal dementia Alzheimer disease Lewy body dementia OK Question Title 2. Which gene is most commonly associated with an increased risk of Alzheimer disease? BRCA1 APOE CFTR HTT OK Question Title 3. Is having a family history of dementia always indicative of a genetic link? Yes, always No, not necessarily Only in cases of young-onset dementia Only in cases of Alzheimer disease OK Question Title 4. What percentage of Alzheimer disease is thought to be strongly 'familial', meaning cases are caused by altered genes that are inherited? About 5% About 25% About 50% Over 75% OK Question Title 5. Which of the following is a non-modifiable risk factor for dementia? Diet Physical activity Age Environmental exposures OK DONE