Harmonization summary
2 label-stable codes
- Label changes detected
- 0
- Multiple dataset contexts
- 0
- Unique codes
- 2
- Enriched codes in this report
- 0
Praxis Data Lab · Variable History
Variable history and harmonization report.
Review variable definitions, cycle chronology, survey design, laboratory methods, method-change boundaries, detection limits, and evidence-backed harmonization actions.
2matching variable codes
3 release records across 3 datasets and 3 cycles.
Search scope
Results for “AUQ410C”
Scientific safeguard
Qualified assessment is authoritative; chronology remains supporting evidence.
Praxis separates source-stated method or instrument changes from automated differences in CDC/NCHS method text. The qualified harmonization assessment below is the researcher-facing conclusion; method chronology explains the underlying evidence and does not override that adjudication.
Variable-by-variable chronology
Qualified harmonization assessment and indexed evidence
Each variable first shows the current qualified assessment used by Study Builder, followed by cycle-specific source evidence and method chronology.
AUQ410cCompatible with harmonization
What are the main causes of {your/SP's} hearing loss?
- Observed years
- 2017–2020
- Release records
- 2
- Datasets
- 2
- Components
- Questionnaire
Qualified Praxis harmonization assessment
Compatible with harmonization · moderate confidence
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
Relevant boundaries: 2017-2018 → 2017-2020 · 2017-2020 → 2021-2023
Praxis harmonization actions
- Verify merge grain, companion variables, and component-specific analytic guidance for the new file context.
- Apply cycle-specific eligibility rules and restrict the pooled analytic population to a defensible common target population.
Supporting CDC/NCHS evidence
Variable names / labels over time
- What are the main causes of {your/SP's} hearing loss? — 2017-2018 · 2017-2020
Cycle-by-cycle release history
- 2017-2018: AUQ_J — What are the main causes of {your/SP's} hearing loss? — Audiometry (Questionnaire)
- 2017-2020: P_AUQ — What are the main causes of {your/SP's} hearing loss? — Audiometry (Questionnaire)
AUQ410CCompatible with harmonization
What are the main causes of {your/SP's} hearing loss?
- Observed years
- 2021–2023
- Release records
- 1
- Datasets
- 1
- Components
- Questionnaire
Qualified Praxis harmonization assessment
Compatible with harmonization · moderate confidence
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
Relevant boundaries: 2017-2018 → 2017-2020 · 2017-2020 → 2021-2023
Praxis harmonization actions
- Verify merge grain, companion variables, and component-specific analytic guidance for the new file context.
- Apply cycle-specific eligibility rules and restrict the pooled analytic population to a defensible common target population.
Supporting CDC/NCHS evidence
Variable names / labels over time
- What are the main causes of {your/SP's} hearing loss? — 2021-2023
Cycle-by-cycle release history
- 2021-2023: AUQ_L — What are the main causes of {your/SP's} hearing loss? — Audiometry (Questionnaire)