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.
4 variable assessments
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
Questionnaire
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
Demographics
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
Demographics
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