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Analysis of differential item functioning in the depression item bank from the Patient Reported Outcome Measurement Information System (PROMIS): An item response theory approach
patient reported outcomes measurement information system item response theory
2009/12/16
The aims of this paper are to present findings related to differential item functioning (DIF) in the Patient Reported Outcome Measurement Information System (PROMIS) depression item bank, and to discu...
Occurrences and sources of Differential Item Functioning (DIF) in patient-reported outcome measures: Description of DIF methods,and review of measures of depression,quality of life and general health
Differential Item Functioning (DIF) measurement equivalence patient-reported outcomes
2009/12/18
Examination of the equivalence of measures involves several levels, including conceptual equivalence of meaning, as well as quantitative tests of differential item functioning (DIF). The purpose of th...