Table 1.
Participant Details
| Group | CN | SI | Total |
|---|---|---|---|
| n | 96 | 25 | 121 |
| Male/Female | 54/42 | 14/11 | 68/53 |
| Baseline Age (years) | 68.5 (7.4) | 73.4 (7.6) | 69.5 (7.7) |
| Mean number of scans per participant | 7.6 (2.2) | 8.0 (1.8) | 7.7 (2.1) |
| Mean yrs of scan data per participant | 8.2 (2.4) | 7.2 (2.3) | 8.0 (2.4) |
| Mean yrs from first visit to onset of Cog. Impairment | -- | 11.2 (3.4) | -- |
| MMSE at first scan | 28.9 (1.4) | 28.8 (1.3) | 28.9 (1.3) |
| Education (years) | 16.4 (2.7) | 16.2 (3.0) | 16.3 (2.7) |
| Hypertension (%) | 46.5 | 63.6 | 60.1 |
| Diabetes (%) | 10.1 | 13.6 | 12.9 |
| Hypothyroidism (%) | 7.1 | 9.1 | 8.7 |
| APOE 3/4 (%) | 19.2 | 23.1 | 22.3 |
| APOE 4/4 (%) | 7.7 | 4.2 | 5.0 |
Note. CN = participants who remain cognitively normal over follow-up, SI = participants subsequently diagnosed with cognitive impairment.
Standard deviation shown in parentheses where applicable.