Stage of Dementia Calculator

  • Clinical Dementia Rating (CDR)
  • The CDR is a tool to give an estimated idea of the current level of dementia a person may have. It is best suited for people with Alzheimer's but can also be useful (although possibly less accurate) for those with other forms of dementia.
  • Click one button from each section that best describes the person you are trying to evaluate.
  • Score only as decline from previous usual level due to cognitive loss, not impairment due to other factors.
  • Morris, J.C. (1993) The Clinical Dementia Rating (CDR): current version and scoring rules. Neurology, 43, 2412-4.