Table 2.
Cognitive domain | Cognitive tests | Controls (N=33) (SD; range) |
Pre-symptomatic mutation carriers (N=12) (SD; range) |
Symptomatic mutation carriers (N=15) (SD; range) |
---|---|---|---|---|
Global cognitive function | MMSE (mean points) | 29.4 (0.7; 27 – 30) | 29.8 (0.6; 28 – 30) | 26.7 (3.8; 16 – 30)** |
Memory | WMS (mean Memory quotient) | 124.9 (10.8; 105 – 143) | 121.6 (11.5; 103 – 137) | 110.5 (24.9; 72 – 143)* |
HVLT immediate recall | 28.2 (4.3; 16 – 35) | 28.0 (2.8; 24 – 32) | 21.4 (7.5; 7 – 31)* | |
HVLT delayed recall | 10.4 (2.3; 6 – 19) | 9.8 (1.7; 7 – 12) | 6.8 (3.7; 0 – 12)** | |
Psychomotor speed | TMT A (mean sec) | 30.3 (10.7; 15 – 53) | 26.6 (8.8; 16 – 44) | 54.8 (21.7; 29 – 96)** |
Executive function | TMT B (mean sec) | 59.9 (22.5; 30 – 105) | 54.5 (13.4; 39 – 85) | 161.2 (127.1; 67 – 540)** |
DSST (mean nr correct symbols) | 77.1 (15.5; 46 – 110) | 84.0 (11.8; 62 – 101) | 47.3 (17.3; 18 – 79)** | |
Clock drawing (median points) | 3.0 (0.2; 2 – 3) | 3.0 (0.5; 2 – 3) | 2.0 (0.6; 1 – 3)** | |
Language | Letter fluency (mean nr of correct words) | 33.9 (9.1; 13 – 50) | 32.9 (11.8; 19 – 54) | 23.5 (7.9; 12 – 38)* |
Category fluency (mean nr of correct words) | 22.2 (5.6; 14 – 40) | 23.0 (6.0; 14 – 32) | 15.3 (5.5; 3 – 23) * | |
BNT (mean nr of correct items) | 28.6 (1.0; 27 – 30) | 28.3 (1.1; 26 – 30) | 23.0 (6.6; 4 – 29)** | |
Apathy | Apathy scale of Starkstein (mean points) | 9.4 (3.7; 2 – 15) | 8.9 (5.2; 2 – 20) | 8.9 (4.9; 2 – 18) |
Anxiety | HADS subscale anxiety (mean points) | 3.5 (2.7; 0 – 10) | 4.0 (2.8; 0 – 9) | 5.5 (3.8; 0 – 13)* |
Depression | HADS subscale depression (mean points) | 1.9 (2.3; 0 – 9) | 1.8 (3.0; 0 – 10) | 4.1 (3.2; 0 – 11) * |
=p<0.05 and
=p<0.001; controls vs pre-symptomatic carriers and controls vs symptomatic carriers