Public Willingness to Undergo Presymptomatic Genetic Testing for Alzheimer’s Disease

Table 2

Participants’ report of family history of Alzheimer’s disease, dementia, and age of onset before 50 years (total number of participants =2935).

Participants’ report	Number (%)	Onset before 50 years of age; number (%)
First-degree relative with AD	363 (12.4)	24 (0.82)
Second-degree relative with AD	584 (19.9)	19 (0.53)
Both first- and second-degree relatives with AD	161 (5.5)	7 (0.24)
First- or second-degree relative with AD	786 (26.8)	NA
First-degree relative with dementia	536 (18.3)	33 (1.12)
Second-degree relative with dementia	870 (29.6)	28 (0.95)
Both first- and second-degree relatives with dementia	273 (9.3)	11 (0.37)
First- or second-degree relatives with dementia	1133 (38.6)	NA
Being a caregiver for a patient with AD	526 (17.9)	NA