2Stocking ML. Three practical issues for modern adaptive testing item pools [M]. Princeton, NJ: Educational Testing Service. 1994, ETS Research Rep. 94-95.
3Downs SM, Marasigan F, Abraham V, et al. Scoring performance on computer-based patient simulations: Beyond value of information [ J ]. Proc AMIA Symp, 1999 (6) :520-524.
4Bickel P, Buyske S, Chang H, et al. One maximizing item information and matching ability with item difficulty[ J ]. Psychometrika, 2001 (66) : 69-77.
5Herlitz J, Ekstrom L, Wennerblom B, et al. Effect of bystander initiated cardiopulmonary resuscitation on ventricular fibrilla- tion and survival after witnessed cardiac arrest outside hospi- tal [ J ]. Br Heart J, 1994,72 : 408.