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
DSDFD1LCEvidence developinglow confidence
Laboratory
Cat allergen Felis domesticus 1 (Fel d 1) dust allergen, comment code
- Source releases
- 1
- Available cycles
- 2005-2006
- Dataset
- Allergens - Household Dust
No normalized longitudinal change evidence is available for this variable. Absence of events must not be interpreted as proof of cross-cycle equivalence.
Evidence provenance: Praxis automated inference from indexed CDC/NCHS evidence
HRQ010Evidence developinglow confidence
Laboratory
Has your hair been given a permanent or been treated with a hair dye or a hair straightener within the last month?
- Source releases
- 1
- Available cycles
- 1999-2000
- Dataset
- Mercury - Hair
No normalized longitudinal change evidence is available for this variable. Absence of events must not be interpreted as proof of cross-cycle equivalence.
Evidence provenance: Praxis automated inference from indexed CDC/NCHS evidence
