Physicians disparage the EHR because of it's disruption of the clinical encounter and inefficiency in data entry. Few would deny the enormous data collection which has taken place.
As a result two enormous data sources are available.
In healthcare, claims data is often described as a river that is a mile wide but only an inch deep, while clinical data—the analogy goes—is a mile deep and an inch wide. Yet, with the widespread adoption of electronic health record systems by providers, claims data often gets short shrift relative to EHRs.