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The feasibility of applying item response theory to measures of migraine impact: a re-analysis of three clinical studies. Quality of Life Research, 12, 887-902.. (2003).
Calibration of an item pool for assessing the burden of headaches: an application of item response theory to the Headache Impact Test (HIT). Quality of Life Research, 12, 913-933.. (2003).
Measuring quality of life in chronic illness: the functional assessment of chronic illness therapy measurement system. Archives of Physical Medicine and Rehabilitation, 83, S10-7. presented at the Dec.. (2002).
Computerized adaptive measurement of depression: A simulation study. BMC Psychiatry, 4, 13-23.. (2004).