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Comparing the results with population norms, however, revealed that the patients were distinguished only by high levels of depressed mood and loss of interest and poor concentration. In the majority of patients the range and severity of symptoms fell below the criteria for \u2018caseness\u2019. Only four patients could be allocated to an ICD-9 class, two to \u2018 neurotic depression\u2019, one to \u2018 anxiety state\u2019 and one to \u2018 phobic state\u2019. This rate was almost identical to that found in the general population. Broader indices of psychiatric morbidity were related to the patients' levels of disability and cognitive function.<\/jats:p>","DOI":"10.1017\/s0033291700013246","type":"journal-article","created":{"date-parts":[[2009,7,9]],"date-time":"2009-07-09T14:21:57Z","timestamp":1247149317000},"page":"77-87","source":"Crossref","is-referenced-by-count":63,"title":["Psychiatric morbidity in patients with Parkinson's disease"],"prefix":"10.1017","volume":"20","author":[{"given":"R. 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K. , Babor T. , Breugha T. , Burke J. , Cooper J. , Griel R. , Jablensky A. , Regier D. & Sartorius N. (1989). SCAN: Schedules for Assessment in Neuropsychiatry. 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