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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.

2variables selected

1 cycle in this study.

Praxis harmonization check: ready

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

2 variable assessments

Your study specification is assembled

Your complete Study Package is ready to review.

See your selected variables, automatic survey fields, reproducible deliverables, and early access price in one clear summary.

$59 $39Review Study Package — $39
ALQ151
Compatiblemoderate confidence

Questionnaire

Was there ever a time or times in {your/SP's} life when {you/he/she} drank {DISPLAY NUMBER} or more drinks of any kind of alcoholic beverage almost every day?

Source releases
6
Available cycles
2011-2012 · 2013-2014 · 2015-2016 · 2017-2018 · 2017-2020 · 2021-2023
Dataset
Alcohol Use

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
    AUDTYL19
    Compatiblemoderate confidence

    Examination

    Tympanometry-Left Ear, Measurement 19

    Source releases
    7
    Available cycles
    1999-2000 · 2001-2002 · 2003-2004 · 2005-2006 · 2007-2008 · 2009-2010 · 2011-2012
    Dataset
    Audiometry - Tympanometry

    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