A Retrospective Database Study for the Development and Validation of Algorithms for Intracerebral Hemorrhage and Seizures in Alzheimer's Disease

Inclusion Criteria:

• Before or on the outcome event date, have at least 1 ICD-10-CM diagnosis code for AD in medical claims in an inpatient setting; or have at least 2 ICD-10-CM diagnosis codes in medical claims in an outpatient setting, at least 7 days and less than 365 days apart
• Have at least 365 days of continuous coverage with medical and pharmacy benefits before the outcome event date
• Have EHR data available for (1) the outcome event date or (2) during the period of up to 30 days before and up to 90 days after the outcome event date
• Have unstructured EHR information (ie, clinical notes) available for any encounter (1) on the outcome event date or (2) during the period of 30 days before to up to 45 days after the outcome event date

Exclusion Criteria:

• New-onset seizure outcome only: Have any ICD-10-CM diagnosis code for seizure or epilepsy before the outcome event date