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Development of a brief validated geriatric depression screening tool: the SLU "AM SAD"
Binu Chakkamparambil1, John T Chibnall1, Ernest A Graypel1
1Department of Neurology and Psychiatry, St. Louis University School of Medicine, St. Louis, MO.
Objectives:
Combining five commonly observed symptoms of late-life depression to develop a short depression screening tool with similar sensitivity and specificity as the conventional, more time-consuming tools.
Methods:
We developed the St. Louis University AM SAD (Appetite, Mood, Sleep, Activity, and thoughts of Death) questionnaire. The frequency of each symptom in the prior 2 weeks is quantified as 0, 1, or 2. Patients 65 years or older from our clinics were administered the AM SAD, the Geriatric Depression Scale (GDS-15), the Montgomery-Asberg Depression Rating Scale (MADRS), and the St. Louis University Mental Status Exam (SLUMS).
Results:
100 patients were selected. AM SAD correlation with GDS was 0.72 and MADRS 0.80. AM SAD yielded a sensitivity and specificity of 79% and 62% against diagnosis of depression; of 88% and 62% with GDS-15; and 92% and 71% with MADRS.
Conclusions:
The AM SAD can be reliably used as a short depression screening tool in patients with a SLUMS score of 20 or higher.