Table A1.
Cognitive performance of deep brain stimulation candidates versus general clinic patients.
| Measure | DBS | General Clinic | Significance |
|---|---|---|---|
| (n = 338) | (n = 156) | ||
| Mean (SD) | Means (SD) | p-value | |
| Dementia Rating Scale-2, raw total | 137.05 (4.28) | 136.86 (4.92) | 0.69 |
| Cognitive Composites (z-scores) # | |||
| Executive Function | −0.55 (0.88) | −0.64 (0.93) | 0.32 |
| Verbal Delayed Memory | −0.37 (1.00) | −0.36 (1.04) | 0.95 |
| Language | 0.001 (0.94) | −0.09 (1.00) | 0.35 |
| Visuospatial Abilities | 0.01 (0.78) | 0.02 (0.79) | 0.85 |
| Attention/Working Memory | 0.20 (0.77) | 0.11 (0.76) | 0.22 |
Note. # z-score has a mean of 0 and SD of 1, and z-score composites were computed from performance on neuropsychological tasks within a domain. Bootstrapped independent sample t-tests were performed to assess group differences.