Table 1:

Algorithm definitions

Algorithm	Definition
1	≥2 diagnosis codes for dementia within a 12-month period
2	≥2 diagnosis codes for dementia within a 24-month period
3	≥1 diagnosis codes for dementia ever
4	≥2 diagnosis codes for dementia and/or MCI within a 12-month period
5	≥2 diagnosis codes for dementia within a 12-month period, or 1 diagnosis code for dementia and ≥1 prescription(s) for dementia drug within a 12-month period
6	≥2 diagnosis codes for dementia within a 12-month period, or 1 diagnosis code for dementia and ≥1 prescription(s) for dementia drug within a 12 month period, or 1 diagnosis code for dementia and ≥1visit to dementia-related specialty care

Abbreviations: MCI, mild cognitive impairment.