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Table 2 Baseline specific cognitive characteristics of PD stratified by RBD

From: CSF Aβ1–42 level is associated with cognitive decline in early Parkinson’s disease with rapid eye movement sleep behavior disorder

Cognitive domain Measure PD with RBD(N = 136) PD without RBD(N = 214) P value
Verbal memory HVLT Total Recall 45.23 ± 10.80 47.69 ± 10.83 0.039*
  HVLT Recognition Discrimination 47.52 ± 13.05 49.70 ± 10.86 0.092
Visuospatial function Benton Judgment of Line Orientation 12.65 ± 2.82 13.21 ± 2.58 0.058
Processing speed /attention Symbol Digit Modalities 43.64 ± 9.08 46.36 ± 9.36 0.008*
Executive function /working memory Letter-Number Sequencing 11.17 ± 2.53 11.72 ± 2.71 0.06
  Semantic Fluency total 50.19 ± 9.24 51.31 ± 10.40 0.305
  1. Results are mean ± (SD). P value was assessed using two-tailed Student t test for each variable. *P value statistically significant. The PD with RBD group performed worse on the HVLT total recall and Symbol Digit Modalities
  2. Abbreviations: PD Parkinsonr’s disease, RBD Rapid eye movement sleep behavioral disorder, HVLT Hopkins Verbal Learning Test