Rating Scales for Dementia
Agents and underwriters know that memory loss or cognition (thinking) problems in older adults can represent an early sign of dementia or possible Alzheimers disease. While not all older clients with memory loss or cognition problems will have Alzheimers disease, a majority of these clients frequently undergo some form of evaluation that will usually include the use of a "rating scale."
Rating scales are "scoring systems" that are used to evaluate medical conditions. In dementia and Alzheimers disease the rating scales are based on patient information, caregiver information and clinical observations. The findings are translated into numbers. Each scale then provides a "score" that can be used as evidence to support a diagnosis, serve as the basis for additional testing or provide a tool for monitoring the disease process. There are a number of rating scales that are used both in the initial assessment of dementia, as well as tracking the progression of Alzheimers disease.
Rating scales for dementia and Alzheimers disease assess memory, cognition (how the patient is thinking), global function (how the patient is functioning in all aspects of their world), behavior, activities of daily living (ADLs), and disease severity. The following is a list of rating scales commonly employed in the clinical arena:
MMSE-Mini-Mental State Examination
This rating scale is a brief, structured bedside or in-office examination. It evaluates memory and cognition.

See this link for the actual MMSE test questions and how they are scored:
http://www.nzgg.org.nz/library/gl_complete/Acetylcholinesterase/appendix.cfm
ADAD-Cog-Alzheimers Disease Assessment Scale-Cognitive subscale
This rating scale is a battery of tests that takes about an hour to administer. It evaluates cognition and it is scored between 0 (best) and 70 (worst).
CGIC-Clinicians Global Impression of Change
This rating scale is based on the health care providers "general clinical impressions" with or without the informant input (i.e. family members). It evaluates global function and is scored from 1 (very much improved) to 7 (very much worsened).
CIBI-Clinicians Interview-Based Impression
This rating scale looks at 8 items based on patient and caregiver information. It evaluates global function and is scored like the CGIC.
CIBIC and CIBIC-Plus-Clinicians Interview-Based Impression of Change and Clinicians Interview-Based Impression of Change with caregiver input
This rating scale is a structured interview of the patient that is scored like the CGIC. It evaluates global function. The CIBIC-Plus includes the caregiver information.
NPI-Neuropsychiatric Inventory
This rating scale is composed of a 12 item structured interview of the caregiver and is scored from 0 to 120 (the higher the score, the greater the psychiatric disturbance). It evaluates behavior.
PDS-Progressive Deterioration Scale
This rating scale is a caregiver 29-item assessment that is scored from 0 (greatest impairment) to 100. It evaluates ADLs.
IDDD-Interview for Deterioration in Daily Living Activities in Dementia
This rating scale is a structured interview of the caregiver on 33 items and is scored from 33 to 233 (most severe). It evaluates ADLs.
ADCS/ADL-Alzheimers Disease Cooperative Study
This rating scale is a 23-item assessment of ADLs that is scored from 0 (greatest impairment) to 78. It evaluates ADLs.
DAD-Disability Assessment for Dementia Scale
This rating scale is a 46-item structured interview or questionnaire for the caregiver that is scored from 0 to 100 (least impairment). It evaluates ADLs.
GDS-Global Deterioration Scale
This rating scale is a clinician-rated staging scale that is scored from 1 (normal) to 7 (advanced dementia). It evaluates disease severity.
CDR-Clinical Dementia Rating Scale
This rating scale is a structured interview with the patient and an informant that is scored from 0 (no impairment) to 3 (severe impairment).
Underwriting Comment
Rating scales can be very helpful in the underwriting assessment of applicants with "suspected" or "known" dementia. For life insurance and LTC agents, the most important rating scale to be familiar with is the MMSE. This is the rating scale that is most often used in clinical and insurance medicine, especially for applicants with "suspected" dementia. Underwriters are most likely to request an MMSE in cases where underwriting evidence is "suggestive" of dementia issues, but inconclusive.
When considering rating scales, dementia and underwriting, it is important to keep the following items in mind:
1. A rating scale is only as good as the clinician using it.
This means that rating scales are subject to "operator error" and need to be viewed in the context of the "complete" package of underwriting evidence.
2. Rating scales do not confirm a diagnosis.
This means that they are used to assess and monitor suspected or diagnosed cognitive problems. They are part of the evaluation and management of dementia-based disease, but are not "diagnostic tools" unto themselves.
3. Rating scales do not exist in a vacuum.
This means that they need to be viewed in the context of the applicants entire medical history and clinical findings. While the results can form a piece of the underwriting puzzle, they by no means represent the entire puzzle.
4. Underwrite the applicant, not the rating scale.
This means that agents need to present as much information as possible to insure that the applicant is fairly assessed. See this underwriting article on "functional ability" and older clients to become familiar with what additional information is critical to the process: http://www.risktutor.com/demo/apr_02.html