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Demographic characteristics of the study sample and the general HUNT3 population
| Study sample | HUNT3 | |
|---|---|---|
| N | 65 | 7975 |
| Agea (Mean ± SDb), y | 77.6 ± 5.0 | 77.0 ± 4.9 |
| Age range, y | 70.0–86.6 | 70.0–89.9 |
| Females (%) | 54 | 55 |
| Education | ||
| Elementary school, n (%) | 21 (32) | 4232 (53) |
| High school, n (%) | 26 (40) | 1902 (24) |
| College/university, n (%) | 9 (14) | 811 (10) |
| Missing, n (%) | 9 (14) | 1030 (13) |
aAge on joining the HUNT3
bSD, standard deviation
