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Fig. 3 | BMC Medical Informatics and Decision Making

Fig. 3

From: Use of multidimensional item response theory methods for dementia prevalence prediction: an example using the Health and Retirement Survey and the Aging, Demographics, and Memory Study

Fig. 3

The distributions of latent cognitive and functional ability by dementia status in the Aging, Demographics, and Memory study (ADAMS) and the Health and Retirement Survey (HRS). The three plots show three different forms of dementia status: ADAMS true prevalence refers to dementia status based on the adjudicated clinician-based assessment, ADAMS predicted prevalence refers to dementia status in ADAMS based on the item response theory (IRT) algorithmic approach, and HRS predicted prevalence refers to the results of the IRT algorithmic approach in HRS

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