Concordance and discordance in disease severity classification between clinician judgments and cognitive testing scores for Alzheimer’s disease in the United States Veterans Affairs Healthcare System

The current standard of practice for assessment of Alzheimer’s disease (AD) severity in the Department of Veterans Affairs (VA) Healthcare System is primarily based on clinical examination and cognitive testing. We aimed to assess the consistency between clinician judgements of AD severity compared with that classified by cognitive test scores in the VA system.