Praxis Data Lab · Study Builder
Combine variables from the indexed Continuous NHANES catalog, choose the cycles you need, and see how Praxis connects source history, methods, cycle boundaries, and cross-code lineage into a study-specific harmonization view.
1 cycle in this study.
The selected variables and cycle span have no indexed blocking harmonization boundary.
1 variable assessment
Your study specification is assembled
See your selected variables, automatic survey fields, reproducible deliverables, and early access price in one clear summary.
Examination
Praxis found no indexed change boundary inside the selected cycle span that prevents pooling. Standard NHANES design requirements still apply.
Evidence provenance: Praxis automated inference from indexed CDC/NCHS evidence