Praxis Data Lab · Validation Registry

Evidence that can be inspected, not merely asserted.

Each record reruns a defined NHANES analytical pathway against an authoritative NCHS publication and preserves the result as a machine-readable test.

Benchmark suite

Public Validation Records

The suite validates representative analytical pathways. It does not claim that every NHANES variable or possible analysis has been independently benchmarked.

Record 001Passed

Overall survey-weighted prevalence

Depression prevalence among U.S. adults aged 20 and over, 2013–2016

NCHS-DB303-OVERALL-DEPRESSION-2013-2016

Last validated August 26, 2026

Inspect the Validation Record

Record 002Passed

Survey domains, variance and confidence intervals

Depression prevalence by sex among U.S. adults aged 20 and over, 2013–2016

NCHS-DB303-DEPRESSION-BY-SEX-2013-2016

Last validated August 26, 2026

Inspect the Validation Record

Interpretation boundary

Evidence for pathways—not a universal certification.

A passing record applies to the population, variables, transformations, survey design, and estimand documented inside that record. Future product outputs will carry an exact-benchmark, pathway-validated, or not-yet-benchmarked label.

These independent Praxis reproductions use cited public CDC/NCHS sources and publish their methods, tolerances, and results for inspection.

Read the full research-use notice