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
BMXBMICompatiblehigh confidence
Examination
Body Mass Index (kg/m**2)
- 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
- Body Measures
CDC/NCHS documentation supports continuity of the core NHANES anthropometry protocol across Continuous NHANES. BMI remains the derived construct of weight in kilograms divided by standing height in meters squared. Indexed differences for this variable are limited to dataset context and documentation wording, not a confirmed measurement or calculation discontinuity.
Evidence provenance: CDC/NCHS source-confirmed evidence · Praxis deterministic adjudication
Evidence signals: source-stated
Praxis harmonization actions
- Pool BMI across calibrated cycles without a method adjustment when no substantive variable-level change is present. Continue to apply cycle-appropriate NHANES weights, eligibility restrictions, and ordinary analytic guidance.
Supporting CDC/NCHS evidence
