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Title
Item response theory methods can improve the measurement of physical function by combining the modified health assessment questionnaire and the SF-36 physical function scale.
Authors
Martin M; Kosinski M; Bjorner JB; Ware JE Jr; Maclean R; Li T
Publication
Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation, 2007, Vol 16, Issue 4, p647