Efforts are underway to define a national framework for secondary analysis of health-related
data. In the meantime, regional health databases have been constructed using insurance
claims data, clinical data from single large health care providers, clinical data
from multiple collaborating health care providers, and public health data. Large-scale
survey data also are available in government databases. Clinical laboratory results
are an important component of all these databases because they can provide validation
for manually assigned diagnostic and procedure codes and can support inference of
key information not provided by coding, such as severity of disease and prevalence
of risk factors.
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