Psychotherapy and Psychosomatics · 2000 · 34 citations · 44 references
Our data demonstrate that internists' ratings of severity of illness and functional impairment, but not prognosis, are associated with HADS depression scores, whereas there is no such association with self-rated anxiety.
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The Hospital Anxiety and Depression Scale
A. S. Zigmond, R. P. Snaith · Acta Psychiatrica Scandinavica · 1983 · 45.5K citations
Can Comorbidity Be Measured By Questionnaire Rather than Medical Record Review?
Jeffrey N. Katz, Lily Chang, O. Sangha et al. · Medical Care · 1996 · 1K citations