Palliative Medicine · 2011 · 77 citations · 12 references
Both tools are useful. However, the pain tool also picks up distress, which is not caused by pain. It could potentially lead to false ascriptions of pain. The distress tool picks up a broader array of signs, which may be useful both in practice and in research.
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A New Clinical Scale for the Staging of Dementia
Charles P. Hughes, Leonard van den Berg, Warren L. Danziger et al. · The British Journal of Psychiatry · 1982 · 7K citations
Assessment of discomfort in advanced Alzheimer patients
Ann C. Hurley, Beverly J. Volicer, Patricia Hanrahan et al. · Research in Nursing & Health · 1992 · 472 citations