A systematic investigation of tardive dyskinesia in inpatients

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Abstract
Although many scales to measure tardive dyskinesia have been developed, none has been widely accepted. The authors used the Abnormal Involuntary Movement Scale (AIMS) to evaluate a group of 293 inpatients who had been given a primary or secondary diagnosis of schizophrenia. They found a tardive dyskinesia prevalence of 30% using a criterion rating of 3 (moderate symptoms) or more on the AIMS. The prevalence figure declined as the criterion became more severe. They also found that women had a much higher prevalence of the disorder only when more severe symptoms were used as the criterion. They conclude that the AIMS is a reliable instrument for assessing tardive dyskinesia.

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