Clinical Dementia Rating Calculator

Exact independently verified CDRglobal algorithm/table rules reference lookup with source, context and as-of date. Required context: six independently assessed domains, actual WashingtonUniversityCDRedition, special memory rules and qualified assessor. Caller supplies actual applicable qualified records; illustrative examples are not authoritative clinical/normative data. No default dosage, normal range, diagnosis, individual risk estimate, treatment plan or safe procedure is fabricated.

Description

Clinical Dementia Rating depends on its adopted assessment protocol and domain evidence.

Clinical Dementia Rating depends on its adopted assessment protocol and domain evidence.^[1]

A supplied-reference lookup does not compute a global rating.

When to use Clinical Dementia Rating Calculator

Use this tool to retrieve a recorded reference with its source context. Establish the assessment or recording protocol, units, instrument version and independently applicable reference or calibration.

How to use Clinical Dementia Rating Calculator and understand its results

Establish the assessment or recording protocol, units, instrument version and independently applicable reference or calibration.
Enter callerVerifiedSource, callerVerifiedContext, callerVerifiedAsOfDate, callerReferenceKeys, callerReferenceTexts, queryReferenceKey, using the field meanings and rules below, then run the tool.
Read result.matchedCallerReference, result.source, result.context, result.asOfDate. Use the units and sign conventions below.
Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.

Input field	Meaning	Value type	Requirement
callerVerifiedSource	Caller verified source; supplied assertion, not independently verified; output retention depends on the rules below	string	Required
callerVerifiedContext	Caller verified context; supplied assertion, not independently verified; output retention depends on the rules below	string	Required
callerVerifiedAsOfDate	Caller verified as of date; real Gregorian YYYY-MM-DD date for the supplied record	string	Required
callerReferenceKeys	Caller reference keys	list of string	Required
callerReferenceTexts	Caller reference texts	list of string	Required
queryReferenceKey	Query reference key; use the exact reference token or coordinate domain stated below	string	Required

Supply nonblank source and context strings, each at most 1024 UTF-16 units, and a real Gregorian YYYY-MM-DD as-of date. Supply nonempty aligned reference keys and texts, with unique nonblank exact keys and nonblank texts. Select an exactly matching key; matching is case-sensitive without trimming or normalization. The tool returns the corresponding text and copies the supplied source, context and date. It does not fetch or independently verify a reference or its applicability.

matchedText=texts[indexOfExact(queryKey,keys)]; source/context/date=copied caller assertions

Use the matching field units and the exact boundary, ordering and reference rules above.

Output field	Meaning	Value type
result	Structured result; its nested fields below contain the actual calculation or selected reference	object
result.matchedCallerReference	Caller-supplied text at the exact matching reference key; returned unchanged	string
result.source	Caller source assertion copied unchanged, without independent verification	string
result.context	Caller applicability context copied unchanged, without independent verification	string
result.asOfDate	Caller reference date copied unchanged after Gregorian date validation	string

json

{
  "input": {
    "callerVerifiedSource": "caller-independently-reviewed-source/edition",
    "callerVerifiedContext": "six independently assessed domains, actual WashingtonUniversityCDRedition, special memory rules and qualified assessor",
    "callerVerifiedAsOfDate": "2026-01-01",
    "callerReferenceKeys": [
      "record-a",
      "record-b"
    ],
    "callerReferenceTexts": [
      "Illustrative independently verified CDRglobal algorithm/table rules record a",
      "Illustrative independently verified CDRglobal algorithm/table rules record b"
    ],
    "queryReferenceKey": "record-a"
  },
  "output": {
    "result": {
      "matchedCallerReference": "Illustrative independently verified CDRglobal algorithm/table rules record a",
      "source": "caller-independently-reviewed-source/edition",
      "context": "six independently assessed domains, actual WashingtonUniversityCDRedition, special memory rules and qualified assessor",
      "asOfDate": "2026-01-01"
    }
  }
}

Limitations and assumptions

Actual acquisition, assessment protocol, instrument version and calibration determine applicability. The tool does not examine a person, classify images, administer a questionnaire or choose diagnostic cutoffs. Reference records and their claimed verification are supplied by the caller; the tool does not retrieve or verify them.

Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Lists and matrices must be dense, without missing cells. Numeric lists allow at most 10000 entries; ordinary string lists allow at most 128 strings of 128 UTF-16 units each; numeric matrices allow at most 128 rows and 128 columns, subject to narrower requirements above. Extremely large composite outputs are rejected.

Alternative or Complementary methods

For a related step, use NPI Total Calculator: The NPI combines independently coded domain frequency and severity findings. For a complementary comparison, use CERAD Neuropathology Score Calculator: CERAD neuropathology scoring belongs to a declared pathological assessment framework.

References

Clinical Dementia Rating Calculator — tool.io

Similar or alternative tools

NPI Total Calculator
The NPI combines independently coded domain frequency and severity findings.
CERAD Neuropathology Score Calculator
CERAD neuropathology scoring belongs to a declared pathological assessment framework.