Table 1: Characteristics of participants (unweighted and weighted samples).

Sample characteristicsUnweighted sampleWeighted sample

Gender %%
 Female3056160
 Male1953940
Annual household income
 <$20.000100207
 $20.000 to <$40.0001002018
 $40,000 to <$60.0001002019
 $60.000 to <$80.0001002017
 ≥$80.0001002039
Education
 High school or less1693426
 At least some technical or community college1432930
At least some university1843744
Missing4<1<1
Employment status
 Not working (unemployed,  student, homemaker)661310
 Retired1422824
 Employed (full or part time)2815664
 Missing1122
Participant knows a family member or close friend with
Alzheimer’s disease
 Yes2114242
 No2865757
 Missing311