• Article

Item response theory detected differential item functioning between healthy and ill children in quality-of-life measures

Citation

Langer, MM., Hill, CD., Thissen, D., Burwinkle, TM., Varni, JW., & Dewalt, DA. (2008). Item response theory detected differential item functioning between healthy and ill children in quality-of-life measures. Journal of Clinical Epidemiology, 61(3), 268-276.