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Personal Characteristics of Study Participants in each Cohort
| Characteristic | HAAS | Nun Study | 90+ Study |
|---|---|---|---|
| n=304 | n=363 | n=373 | |
| Sex (female / male) | 0 / 304 | 363 / 0 | 252 / 121 |
| Age at death (year, mean) | 90 | 91 | 98 |
| Education | |||
| less than high school (%) | 46 | 9 | 5 |
| completed college (%) | 13 | 87 | 52 |
| Ethnicity: | |||
| Caucasian (%) | 0 | >99 | 99 |
| Japanese-American (%) | 100 | 0 | <1 |
| Other ethnicity (%) | 0 | <1 | <1 |
| APOE e4 positive (%) | 22 | 23 | 20 |
| Severe cognitive impairment (%) | 32 | 35 | 44 |
