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Distribution of risk factors by cohort.
| Variable | Incident only (n1 = 153) |
Prevalent only (n2 = 77) |
Combined cohorts (n = 230) |
|---|---|---|---|
| APOE4 | |||
| Presence | 39 (25%) | 29 (38%) | 68 (30%) |
| Absence | 114 (75%) | 48 (62%) | 162 (70%) |
| EDCAT | |||
| College and higher | 134 (87%) | 49 (64%) | 183 (80%) |
| Others | 19 (13%) | 28 (36%) | 47 (20%) |
