title: Validation of the Unified Parkinson's Disease Rating Scale (UPDRS) section I as a screening and diagnostic instrument for apathy in patients with Parkinson's disease.
abstract: We examined the validity of the motivation/initiative item of the Unified Parkinson's Disease Rating Scale (UPDRS) section I as a screening and diagnostic measure for apathy in Parkinson's disease (PD). Fifty-eight patients with PD were evaluated with the UPDRS, the 14-item Apathy Scale (AS), and standardized rating scales of depression and cognitive impairment. Apathy was diagnosed using specific items of the AS together with proposed criteria for apathy. A score of 2 or more on the motivation/initiative item was adequate to screen for apathy, whereas a score of 4 had high diagnostic accuracy at the cost of unacceptable low sensitivity.
authors: The Norwegian Centre for Movement Disorders, Stavanger, Norway. pekf@sus.no
authors: Kenn Freddy
authors: KF
authors: Pedersen
authors: Jan Petter
authors: JP
authors: Larsen
authors: Dag
authors: D
authors: Aarsland
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D019964:Mood Disorders / Q000175:diagnosis* / Q000209:etiology*; D009042:Motivation; D009460:Neurologic Examination; D010300:Parkinson Disease / Q000150:complications* / Q000523:psychology*; D011569:Psychiatric Status Rating Scales / Q000592:standards* / Q000706:statistics & numerical data; D012372:ROC Curve; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity