ACD070Compatible with harmonizationmoderate confidence
Questionnaire
In what country was {your/SP's} father born?
- Source releases
- 3
- Available cycles
- 1999-2000 · 2001-2002 · 2003-2004
- Dataset
- Acculturation
No blocking method discontinuity is identified inside the selected cycle span, but one or more longitudinal changes require explicit harmonization conditions before pooling.
Evidence provenance: Praxis automated inference from indexed CDC/NCHS evidence
Evidence signals: source-derived
Relevant boundaries: 1999-2000 → 2001-2002 · 2001-2002 → 2003-2004
Praxis harmonization actions
- Apply cycle-specific eligibility rules and restrict the pooled analytic population to a defensible common target population.
- Verify merge grain, companion variables, and component-specific analytic guidance for the new file context.
Supporting CDC/NCHS evidence
DR1DAYCompatible with harmonizationmoderate confidence
Dietary
Intake day of the week
- Source releases
- 34
- Available cycles
- 2003-2004 · 2003-2004 · 2005-2006 · 2005-2006 · 2007-2008 · 2007-2008 · 2007-2008 · 2007-2008 · 2009-2010 · 2009-2010 · 2009-2010 · 2009-2010 · 2011-2012 · 2011-2012 · 2011-2012 · 2011-2012 · 2013-2014 · 2013-2014 · 2013-2014 · 2013-2014 · 2015-2016 · 2015-2016 · 2015-2016 · 2015-2016 · 2017-2018 · 2017-2018 · 2017-2018 · 2017-2018 · 2017-2020 · 2017-2020 · 2017-2020 · 2017-2020 · 2021-2023 · 2021-2023
- Dataset
- Dietary Interview - Total Nutrient Intakes, First Day
No blocking method discontinuity is identified inside the selected cycle span, but one or more longitudinal changes require explicit harmonization conditions before pooling.
Evidence provenance: Praxis automated inference from indexed CDC/NCHS evidence
Evidence signals: automated-difference · source-derived
Relevant boundaries: 2003-2004 → 2005-2006 · 2005-2006 → 2007-2008 · 2007-2008 → 2009-2010 · 2009-2010 → 2011-2012 · 2011-2012 → 2013-2014 · 2013-2014 → 2015-2016 · 2015-2016 → 2017-2018 · 2017-2018 → 2017-2020 · 2017-2020 → 2021-2023
Praxis harmonization actions
- Confirm that the construct and coding are unchanged before pooling or recoding.
- Verify merge grain, companion variables, and component-specific analytic guidance for the new file context.
- Review the adjacent codebooks/methods. Keep this boundary as documentation variation unless source evidence confirms a substantive method or instrument change.
- Select the weight appropriate to each cycle and subsample; when pooling cycles, construct the combined weight according to NHANES guidance rather than reusing a single-cycle weight unchanged.
Supporting CDC/NCHS evidence
