Table 2.
Group demographics. Age, CVLT, and MMSE for CS and CD shown as “mean (SD) of first year, mean (SD) of last year”
| CS | CD | MRI and PET-CBF | PiB PET | |
|---|---|---|---|---|
| Number of subjects | 25 | 25 | 137 | 66 |
| Number of men | 11 | 17 | 77 | 37 |
| Number of visits, mean (SD) | 7.5 (1.9) | 8.0 (1.4) | 6.7 (2.7) | 1.5 (0.7) |
| Age, mean (SD) | 65.8 (6.2),a 73.3 (7.3) | 70.4 (7.0), 77.8 (6.3)a | 72.8 (7.7) | 79.6 (7.0) |
| CVLT slope, mean (SD) | 1.1 (0.4) | −0.8 (0.4) | 0.1 (0.7) | 0.2 (0.6) |
| CVLT, mean (SD) | 54.2 (10.2),a 67.3 (10.0) | 52.2 (11.0), 43.3 (8.5)a | 54.1 (10.7), 54.9 (12.2) | 53.7 (15.2) |
| MMSE, mean (SD) | 28.9 (1.6),a 29.5 (0.9) | 29.0 (1.1), 28.2 (1.7)a | 28.9 (1.3), 28.8 (1.3) | 28.8 (1.6) |
| APOE ε4, with/without/unknown | 8/15/2 | 5/19/1 | 38/91/8 | 20/42/4 |
Five additional subjects were available for the MRI data alone. Mean CVLT and MMSE for [11C] PiB PET were calculated in the same fashion as mean DVR, that is, scores from all available years for one subject were averaged to obtain one score per subject, and then those scores were averaged over all subjects.
Key: SD, standard deviation.
a
This group (first-year data or last-year data) included in training set.