Table 1.
Demographics of participants at baseline
| Group | N | % F | Age (SD/range) | Education | SES | MMSE | Time between scans |
|---|---|---|---|---|---|---|---|
| Controls | 71 | 69 | 75.4 (8.3/60–93) | 15.1 (2.7) | 2.4 (1.1) | 29.2 (.9) | 2.0 (.7) |
| AD | 64 | 44 | 75.1 (6.7/61–96) | 13.7 (2.9) | 2.8 (1.2) | 25.3 (3.3) | 1.8 (.5) |
| AD subgroups | |||||||
| CDR = 1 | 10a | 50 | 73.5 (7.1/61–83) | 13.1 (2.8) | 2.8 (1.4) | 23 (3.5) | 1.6 (0.6) |
| CDR = 0.5 | 38 | 39 | 75.7 (6.6/62–90) | 13.5 (3.1) | 2.9 (1.2) | 26.3 (2.9) | 1.9 (0.6) |
| Convertedb | 29c | 59 | 76.1 (7.2/64–96) | 14.9 (2.6) | 2.1 (1.1)d | 26.8 (3.3) | 2.0 (0.9) |
Means with standard deviations in parentheses unless otherwise specified.
Two participants change CDR score from 1 to 0.5.
This group consists of persons changing CDR score (a) from 0 to 0.5 (n = 13, 71% female, mean age (SD) 77.1 (7.7), (b) from 0.5 to 1 [n = 13, 46% female, mean age (SD) = 72.7 (4.6)]. The last of these two groups is also included in the AD group.
One participant changing CDR score from 0.5 to 0 was excluded.
Four persons missing SES scores.
% F = percent females. “Time between scans” and “Education” values are in years. SES = Socioeconomic status, MMSE = Mini‐Mental State Examination. Analysis of variance was performed testing differences in means between groups as follows: AD versus controls, CDR = 0.5 versus controls, and converted versus controls (mean difference not tested between controls and CDR = 1). Bold = significantly different from controls at P < 0.05.