TABLE 3.
Group differences in cognitive measures
| HC | PD | DLB | |
|---|---|---|---|
| Visuospatial | |||
| Clock Drawing | 10.00 (0.00) | 9.68 (0.57)a | 6.85 (3.15)a,b |
| RCF – Copy (z‐score) | 0.40 (0.10) | 0.34 (0.78) | −1.00 (2.08)a |
| RCF – Immediate (z‐score) | 0.65 (0.65) | 0.17 (0.95) | −1.10 (0.89)a,b |
| RCF – 20 min delay (z‐score) | 0.74 (0.61) | 0.09 (0.79) | −1.07 (1.03)a,b |
| Trails‐A (z‐score) | 0.73 (0.72) | −0.07 (0.89)a | −3.17 (4.09)a,b |
| Executive Functionc | |||
| Backward Digit Span | 7.35 (1.83) | 7.18 (1.53) | 4.77 (2.79)a,b |
| Verbal Fluency (animals) (z‐score) | 0.79 (1.00) | 0.61 (1.20) | −1.04 (1.10)a,b |
| Verbal Fluency (letter F) (z‐score) | 0.60 (0.92) | 0.56 (1.09) | −0.64 (1.03)a,b |
| Memory | |||
| Digit span forward | 10.35 (1.53) | 11.36 (1.92) | 9.10 (2.39)b |
| LM – Immediate Recall | 12.10 (3.24) | 9.59 (2.97)a | 5.19 (3.28)a,b |
| LM – Delayed Recall | 12.52 (2.20) | 10.23 (2.88)a | 6.40 (3.28)a,b |
a = <HC; b = <DLB; c = Stroop and Trials B were excluded due to low completion numbers. P = 0.017.
Abbreviations: RCF, Rey Complex Figure; LM, Logical Memory.