  This manuscript is a research resource description and presents a large and
novel Electronic Health Records (EHR) data resource, American Family Cohort
(AFC). The AFC data is derived from Centers for Medicare and Medicaid Services
(CMS) certified American Board of Family Medicine (ABFM) PRIME registry. The
PRIME registry is the largest national Qualified Clinical Data Registry (QCDR)
for Primary Care. The data is converted to a popular common data model, the
Observational Health Data Sciences and Informatics (OHDSI) Observational
Medical Outcomes Partnership (OMOP) Common Data Model (CDM).
  The resource presents approximately 90 million encounters for 7.5 million
patients. All 100% of the patients present age, gender, and address
information, and 73% report race. Nealy 93% of patients have lab data in LOINC,
86% have medication data in RxNorm, 93% have diagnosis in SNOWMED and ICD, 81%
have procedures in HCPCS or CPT, and 61% have insurance information. The
richness, breadth, and diversity of this research accessible and research ready
data is expected to accelerate observational studies in many diverse areas. We
expect this resource to facilitate research in many years to come.
