Table 7.
Comparison of demographic data and Pad-HVLT-R scores of the HC and AD group.
| HC (n = 42) | AD (n = 42) | HC vs. AD | ||
|---|---|---|---|---|
| M (SD) | M (SD) | t/χ2 | p | |
| Age group | 68.35 (11.04) | 72.26 (8.41) | −1.847 | 0.068 |
| Education | 8.42 (4.59) | 8.19 (4.37) | 0.236 | 0.814 |
| Sex (male/female) | 24/19 | 20/23 | 0.745 | 0.388 |
| Direct | ||||
| Total recall | 21.07 (9.74) | 8.95 (5.44) | 7.119 | <0.001 |
| Short-delayed recall | 6.93 (3.34) | 1.07 (1.98) | 9.892 | <0.001 |
| Long-delayed recall | 6.35 (2.95) | 0.88 (1.83) | 10.323 | <0.001 |
| RDI | 8.02 (2.83) | 2.47 (2.77) | 9.192 | <0.001 |
| Derived | ||||
| SDR percent retained | 0.80 (0.23) | 0.16 (0.25) | 12.148 | <0.001 |
| LDR percent retained | 0.74 (0.22) | 0.15 (0.3) | 10.380 | <0.001 |
| Semantic clustering | 1.24 (0.58) | 0.67 (0.51) | 4.871 | <0.001 |
| Serial clustering | 0.74 (0.59) | 0.22 (0.27) | −4.748 c | <0.001 |
| Perseverations | 5.26 (6.71) | 0.91 (1.41) | −4.775 c | <0.001 |
| Intrusions errors | 3.05 (3.98) | 1.77 (2.22) | −1.537 c | 0.124 |
HC, healthy control; AD, Alzheimer’s disease; RDI, recognition discrimination index; SDR percent retained, Short-delayed recall percent retained; LDR percent retained, Long-delayed recall percent retained; cMann-Whitney U-test.