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Patients should be asked whether they have experienced these 16 negative feelings and four positive feelings in the past week. Score 1 for "yes" on negative questions and 0 for "no." Positive questions are scored in reverse. A score of 9 or higher indicates depressive symptoms and warrants further examination.
Source: Ostir GV, Markides KS, Peek MK, et al. The association between emotional well-being and the incidence of stroke in older adults. Psychosom Med 2001; 63:210-215.