Selecting optimal screening items for delirium: an application of item response theory.
Yang, Frances M, Richard N Jones, Sharon K Inouye, Douglas Tommet, Paul K Crane, James L Rudolph, Long H Ngo, and Edward R Marcantonio. 2013. “Selecting Optimal Screening Items for Delirium: An Application of Item Response Theory.”. BMC Medical Research Methodology 13: 8.