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Table 1 Consensus criteria for dementia case ascertainment

From: Risk factors for dementia in the ninth decade of life and beyond: a study of the Lothian birth cohort 1921

CONSENSUS CRITERIA FOR DEMENTIA CASE ASCERTAINMENT

PROBABLE DEMENTIA

POSSIBLE DEMENTIA

ANY of the following (without opposing evidence from same/other source):

- dementia diagnosis on death certificate (any part)

- dementia diagnosed on clinical review (ICD-10/DSM-IV)

- dementia diagnosis in electronic general medical records (Trak)

- dementia diagnosis in electronic psychiatric records (PIMS)

- ICD-10 criteria for dementia diagnosis met by data within any existing records

ANY of the following (without opposing evidence from same/other source):

- recorded cognitive impairment on death certificate

- cognitive impairment/decline recorded in notes, but incomplete evidence to meet ICD-10 diagnostic criteria

- possibility of dementia recorded in notes but no formal diagnosis/incomplete evidence to meet ICD-10 diagnostic criteria