Table 1 Summary of the five databases used in this study
Name | Type | Description | Start | End | Size (million lives) |
|---|---|---|---|---|---|
IBM Medicare Supplemental Beneficiaries (MDCR) | US Claims | Patients aged 65 or older with supplemental healthcare | 2000–01–01 | 2019–12–31 | 10 |
IBM Medicaid (MDCD) | US Claims | Patients with government subsidized healthcare | 2006–01–01 | 2018–12–31 | 28 |
Optum® De-Identified Clinformatics® Data Mart Database (Optum Claims) | US Claims | Patients of all ages | 2000–05–01 | 2019–12–31 | 84 |
IBM Commercial Claims and Encounters (CCAE) | US Claims | The patients in this database are aged 65 or younger. They are employees who receive health insurance through their employer and their dependents | 2000–01–01 | 2019–12–31 | 152 |
Optum® de-identified Electronic Health Record Dataset (Optum EHR) | US EHR | Patients of all ages | 2006–01–01 | 2019–03–31 | 96 |