Rating Scales as Predictors of Response to Tricyclic Antidepressants

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Abstract
Fifty-three patients suffering from depressive illness were classified as ‘responders’ or ‘non-responders’ on the basis of an “amelioration score” of the Hamilton Rating Scale for depression after six weeks treatment with nortriptyline hydrochloride at 150 mgs. daily. A multivariate analysis of variance was performed on the four psychological rating scale scores used, to determine whether rating scales could predict treatment response to tricyclic antidepressants. There was a significant difference between the two groups after adjustment for age. Subjects were then classified as ‘non-responders’ and ‘responders’ on the basis of their discriminant scores. The prediction of response to tricyclic antidepressants was found to be at 75% probability.

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