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Ridwan A. Sanusi
Public Health
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Article
Open AccessTransitions between versions of the International Classification of Diseases and chronic disease prevalence estimates from administrative health data: a population-based study
Diagnosis codes in administrative health data are routinely used to monitor trends in disease prevalence and incidence. The International Classification of Diseases (ICD), which is used to record these diagnos...
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Article
Open AccessUnsupervised item response theory models for assessing sample heterogeneity in patient-reported outcomes measures
Unsupervised item-response theory (IRT) models such as polytomous IRT based on recursive partitioning (IRTrees) and mixture IRT (MixIRT) models can be used to assess differential item functioning (DIF) in pati...
