Table 1 Demographic characteristics and episodic memory scores
From: Neural correlates of episodic memory in adults with Down syndrome and Alzheimer’s disease
All participants | Asymptomatic | Symptomatic | p-values | |
|---|---|---|---|---|
(N = 139) | (N = 85) | (N = 54) | ||
Age (mean, sd) | 43.6 (10.9) | 38.5 (10.1) | 52.2 (4.6) | <0.001 |
Female sex, n (%) | 64 (46) | 37 (43.5) | 27 (50) | 0.456 |
Severity of ID, n (%) | 0.288 | |||
Mild | 46 (33.1) | 31 (36.5) | 15 (27.8) | |
Moderate | 93 (66.9) | 54 (63.5) | 39 (72.2) | |
Time between MRI and mCRT, days (mean, sd) | 108.2 (81.4) | 116.2 (79.0) | 95.5 (84.2) | 0.088 |
mCRT scores (mean, sd) | ||||
Trial 1 free recall (0–12) | 4.3 (2.3) | 5.4 (1.9) | 2.5 (1.7) | <0.001 |
Trial 3 free recall (0–12) | 5.8 (2.9) | 7.7 (1.7) | 2.7 (2.6) | <0.001 |
Free immediate recall score (0–36) | 15.3 (7.4) | 19.8 (4.7) | 7.7 (5.3) | <0.001 |
Total immediate score (0–36) | 29.5 (9.3) | 35 (1.6) | 20.7 (9.9) | <0.001 |
Free delayed recall score (0–12) | 5 (3.5) | 6.8 (2.7) | 1.7 (2.4) | <0.001 |
Total delayed score (0–12) | 9.7 (3.3) | 11.5 (1.0) | 6.3 (3.6) | <0.001 |