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Praxis Data Lab

Praxis Data Lab · Study Builder

Build your NHANES study with harmonization intelligence.

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.

3variables selected

1 cycle in this study.

Praxis harmonization check: ready

The selected variables and cycle span have no indexed blocking harmonization boundary.

3 variable assessments

ALD260
Compatiblemoderate confidence

Questionnaire

[During the past 30 days] how often did {you/SP} drink hard liquor such as tequila, gin, vodka, scotch, rum, wiskey, or liquers, either alone or mixed?

Source releases
1
Available cycles
1999-2000
Dataset
Diet Behavior & Nutrition

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

Files for selected cycles
Remove from studyVariable historyCDC source
ARXO2WD
Compatiblemoderate confidence

Examination

OCCIPUT-TO-WALL DISTANCE IN CENTIMETERS

Source releases
1
Available cycles
2009-2010
Dataset
Arthritis Body Measures

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

Files for selected cycles
    Remove from studyVariable historyCDC source
    SDMVSTRA
    Compatiblemoderate confidence

    Demographics

    Masked Variance Unit Pseudo-Stratum variable for variance estimation

    Source releases
    12
    Available cycles
    1999-2000 · 2001-2002 · 2003-2004 · 2005-2006 · 2007-2008 · 2009-2010 · 2011-2012 · 2013-2014 · 2015-2016 · 2017-2018 · 2017-2020 · 2021-2023
    Dataset
    Demographic Variables & Sample Weights

    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

    Files for selected cycles
    Remove from studyVariable historyCDC source