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  • Title: The relationship between depression and the dexamethasone suppression test following alcohol withdrawal in a psychiatric population.
    Author: Johnson B, Perry JC.
    Journal: J Clin Psychopharmacol; 1986 Dec; 6(6):343-9. PubMed ID: 3805327.
    Abstract:
    The authors administered at least one dexamethasone suppression test (DST) and Hamilton Rating Scale for Depression (HRSD) simultaneously to 30 psychiatric inpatients following detoxification from alcohol. Twenty-five of these were also interviewed using the NIMH Diagnostic Interview Schedule (DIS). Fifteen patients had two or three sequential DSTs at weekly intervals. Seven of the patients were clinically diagnosed as having a major depressive episode based on close observation over 2 to 4 inpatient weeks free of psychotropic medications. Fifty-eight percent of the initial cortisol determinations with the first 2 weeks showed nonsuppression, as did 60% after 2 weeks. While the level of depressive symptoms was initially high (HRSD score greater than 20) for 48% of the 27 patients interviewed within 2 weeks of abstinence, depressive symptoms cleared within 2 weeks in half of these cases. There were no associations between DST results and the presence of DSM-III major depressive disorder (lifetime or current) as assessed by the NIMH DIS, scores on the HRSD, or the presence of liver disease (elevated admission SGOT or SGPT). By the 15th-day of abstinence an examination of the clinical course of depressive symptoms differentiated those patients with a persistent major depressive episode from those with transient, alcohol-related depressive symptoms. An early positive DST had a positive predictive value of 20% for a clinical diagnosis of a major depressive episode, and a negative predictive value of 73%. After 2 weeks the positive and negative predictive values were each 50%.
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