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To compare responsiveness based on item response theory (IRT) with that based on conventional scoring for two patient-reported outcomes measures in carpal tunnel syndrome (CTS); the short disabilities of the arm, shoulder, and hand (QuickDASH) measure, and the 6-item CTS symptoms scale (CTS-6).
George Rasch (1960) developed Rasch analysis which represents a one-way probabilistic approach based on Item Response Theory (IRT).
Scoring of each scale uses a one-parameter Rasch model, based on item response theory.
In the present study, we assessed the reliability and construct validity of the Chinese Resident Health Literacy Scale based on item response theory (IRT) and classical test theory using a population-based sample from Hunan Province in 2012.
Then, analyses were conducted based on item response methods.
One component of these models is based on item response theory.
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The three estimators of COG (WLE, MLE, EAP) were all based on item responses alone.
Part 1 and Part 2 were originally standard-set using a modified Angoff technique combined with a Hofstee method, but from the diets of 2008/3 and 2010/1 respectively until the present have been set using statistical equating based on Item-Response Theory (IRT), with a one-parameter IRT (Rasch) model [ 20].
MDT-based approaches are a promising alternative to approaches based on item-response theory, and are well-suited for computerized adaptive testing in the health domain.
Tests were performed based on item-response theory.
We assumed that aberrant respondents, participants' guessing, inattentiveness, carelessness and coaxing could be caused by fatigue, misunderstanding, or a poor fit of the examinee for evaluation based on item-response theory [ 51, 52].
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