- Electronic Health Records (EHRs): EHRs offer a wealth of information, including patient demographics, comorbid conditions, treatment history, and outcomes. - Claims Data: These data provide insights into healthcare utilization, costs, and insurance coverage. - Patient Registries: Disease-specific registries collect detailed information on patient populations, treatments, and outcomes. - Wearable Devices and Apps: These tools capture patient-generated health data, including activity levels, symptoms, and quality of life metrics.