A single congestion item by itself is a statistically and substantively significant predictor of patient-relevant outcomes. Although the sample was not randomly drawn from clinics or physician offices, the consistency and strength of the findings suggest the salience of this single symptom for patients' experiences.
This analysis provides additional support for the ECA survey's prevalence estimate of late-life depression. This research failed to find evidence that the highly structured nature of the DIS makes it unsuitable for ascertaining symptoms of depression in the elderly.
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