NHANES Open Data (SODA)
NHANES summary estimates and footnotes published by NCHS as datasets on the CDC open data portal, each readable as JSON through the Socrata Open Data API at /resource/{dataset-id}.json. Examples: NHANES Select Chronic Conditions Prevalence Estimates (i667-sjhg) and DQS NHANES Footnotes (iqm3-hbev). Individual-level survey microdata is not served here; it is released as .xpt files.