Development and validation of patient-reported outcome measures for sleep disturbance and sleep-related impairments. Sleep, 33, 781-92. presented at the Jun 1.
. (2010). Comparing methods of assessing differential item functioning in a computerized adaptive testing environment. Journal of Educational Measurement, 43, 245-264.
. (2006). Methods of selecting successive items in adaptive testing. In Unpublished manuscript. University of Pittsburgh.
. (1985).