Estimating meaningful thresholds for multi-item questionnaires using item response theory.

Berend Terluin,Jaimy E Koopman,Lisa Hoogendam,Pip Griffiths,Caroline B Terwee,Jakob B Bjorner

Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation（2023）

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摘要

The new IRT method perfectly recovers meaningful (interpretational) thresholds for multi-item questionnaires, provided that the data satisfy the assumptions for IRT analysis.

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关键词

Adjusted predictive modeling,Cutoff point,Item response theory (IRT),Meaningful threshold,Patient acceptable symptom state (PASS),Receiver operating characteristic (ROC)

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