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Three- to 5-year prospective follow-up of outcome in major depression
L Van Londen1, R P Molenaar, J G Goekoop
1Department of Psychiatry, Leiden University, The Netherlands.
Background:
A Dutch cohort of predominantly out-patient DSM-III-R major depressive patients was followed for 3 to 5 years after start of treatment in a psycho-neuro-endocrinological prediction study. The study design permitted description of the course of remissions, relapses and recurrences.
Methods:
Pharmacological treatment was standardized, psychotherapy was tailored to the needs of the patient, follow-ups were done monthly until 3 years or more after the initial recruitment.
Results:
After 9 months 49% of the patients had reached full remission and 45% were in partial remission. During the following 3 to 5 years 82% of the patients had reached a period of full remission. Sixteen per cent of the patients needed 2 years or more before full remission. A relapse or recurrence rate of 41% within 5 years was found. Patients with residual symptoms relapsed particularly in the first 4 months after remission, while patients without residual symptoms recurred mainly after 12 months after remission. Previous depressive episodes and psychoticism predicted relapse. Psychomotor retardation at inception predicted a longer time to partial remission.
Conclusion:
In most cases, major depression is a seriously impairing episodic disease. This is also true for a sample of predominantly out-patients treated at a university clinic.