Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí hóa học đề tài : Differential item functioning (DIF) analyses of health-related quality of life instruments using logistic regression | Scott et al. Health and Quality of Life Outcomes 2010 8 81 http content 8 1 81 HEALTH AND QUALITY of life outcomes RESEARCH Open Access Differential item functioning DIF analyses of health-related quality of life instruments using logistic regression Moil A KA p2 orc1 2 Moil IK Anrrhìcrin3 AnrlrQiA Rnffnmlci 4 Ạ Iov2nrlcir rlo r off5 Nell W Scott retei M rdyeis Nell K Adionson Andiew Bottomley AleAdndei de Gldell h I z t r 1 cc ĩr I I 6 7 I cc I I 3 h ỉ I r I I z I I K8 It ỉ f A D lTM r 6 It ỉ I VI K A í M r9 Mogens Gioenvold Chdd Gundy MiChdei Koller Moiten A reteisen Miijdm AG spidngeis the EORTC Qudlity of Life Gioup dnd the Qudlity of Life Cross-Cultural Metd-Andlysis Gioup Abstract Background Diffeientidl item functioning DIF methods Cdn be used to deteimine whethei different subgroups respond diffeiently to pditiculdi items within d hedlth-ieldted qudlity of life HRQoL subscdle dftei dllowing foi oveidll subgioup differences in thdt scdle. This diticle ieviews issues thdt diise when testing foi DIF in HRQoL instiuments. We focus on logistic regression methods which die often used becduse of theii efficiency simplicity dnd edse of dpplicdtion. Methods A ieview of logistic regression DIF dndlyses in HRQoL wds undeitdken. Methodologicdl diticles fiom othei fields dnd using othei DIF methods weie dlso included if considered ielevdnt. Results Theie die mdny competing dppiodches foi the conduct of DIF dndlyses dnd mdny ciiteiid foi deteimining whdt constitutes significdnt DIF. DIF in shoit scdles ds commonly found in HRQL instiuments mdy be moie difficult to inteipiet. Qudlitdtive methods mdy did inteipietdtion of such DIF dndlyses. Conclusions A numbei of methodologicdl choices must be mdde when dpplying logistic regression foi DIF dndlyses dnd mdny of these dffect the iesults. We piovide iecommenddtions bdsed on ieviewing the cuiient evidence. Although the focus is on logistic regression mdny of oui iesults should be dpplicdble to DIF dndlyses in .
