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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.

1matching variable codes

6 release records across 6 datasets and 6 cycles.

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Search scope

Results for “AUQ138”

Harmonization summary

1 label-stable codes

Label changes detected
0
Multiple dataset contexts
0
Unique codes
1
Enriched codes in this report
0

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.

AUQ138Compatible with harmonization

{Have you/Has SP} ever had a tube placed in {your/his/her} ear to drain the fluid from {your/his/her} ear?

Observed years
2005–2016
Release records
6
Datasets
6
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: 2005-2006 → 2007-2008 · 2007-2008 → 2009-2010 · 2009-2010 → 2011-2012 · 2011-2012 → 2013-2014 · 2013-2014 → 2015-2016

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.
  • Confirm that the construct and coding are unchanged before pooling or recoding.
Supporting CDC/NCHS evidence
Variable names / labels over time
  • {Have you/Has SP} ever had a tube placed in {your/his/her} ear to drain the fluid from {your/his/her} ear? — 2005-2006 · 2007-2008 · 2009-2010 · 2011-2012 · 2013-2014 · 2015-2016
Cycle-by-cycle release history
  • 2005-2006: AUQ_D — {Have you/Has SP} ever had a tube placed in {your/his/her} ear to drain the fluid from {your/his/her} ear? — Audiometry (Questionnaire)
  • 2007-2008: AUQ_E — {Have you/Has SP} ever had a tube placed in {your/his/her} ear to drain the fluid from {your/his/her} ear? — Audiometry (Questionnaire)
  • 2009-2010: AUQ_F — {Have you/Has SP} ever had a tube placed in {your/his/her} ear to drain the fluid from {your/his/her} ear? — Audiometry (Questionnaire)
  • 2011-2012: AUQ_G — {Have you/Has SP} ever had a tube placed in {your/his/her} ear to drain the fluid from {your/his/her} ear? — Audiometry (Questionnaire)
  • 2013-2014: CSQ_H — {Have you/Has SP} ever had a tube placed in {your/his/her} ear to drain the fluid from {your/his/her} ear? — Taste & Smell (Questionnaire)
  • 2015-2016: AUQ_I — {Have you/Has SP} ever had a tube placed in {your/his/her} ear to drain the fluid from {your/his/her} ear? — Audiometry (Questionnaire)