Executive dysfunction using behavioral assessment of the dysexecutive syndrome in Parkinson's disease.

The objective of this study was to evaluate the executive dysfunction (ExD) in Parkinson's disease (PD) using the Behavioral Assessment of the Dysexecutive Syndrome (BADS), which provides a wide-range assessment of ExD. The BADS and the Unified Parkinson's Disease Rating Scale (UPDRS) were investigated in 63 nondemented PD patients who revealed scores of >or=24 points on the Mini-Mental State Examination based on the DSM-IV. Multiple logistic regression analysis was performed to evaluate the predisposing factors to ExD, which was defined as <70 points on the age-controlled standardized score.