Praxis Data Lab · NHANES Explorer

Explore NHANES variables.

Use the Explorer’s free public catalogue to find variables by code, health concept, survey component, cycle, dataset name, or file code. Inspect source availability and add variables directly to Study Builder.

Filtered NHANES results3,649unique matching variables

Filter applied to the public catalogue. Open a result to inspect its cycle availability and CDC/NCHS source evidence.

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Free public variable catalogue

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Browse the complete indexed variable inventory by survey component or cycle, then refine it with the search tools below. Catalogue discovery is open to everyone.

Searchable inventory13,311unique NHANES variable codes

Counts show unique variable codes available within each filter. A variable may appear in more than one component or cycle.

Automated CDC/NCHS catalog

Continuous NHANES variable results

Add any indexed variable to Study Builder. Praxis evaluates the selected cycles and returns the available harmonization intelligence, source history, and method context.

ACD040Indexed NHANES variable

Questionnaire

What language(s) {do you/does SP} usually speak at home? Would you say...

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
Acculturation
CDC/NCHS source releases
AGQ160Indexed NHANES variable

Questionnaire

Has this itchy rash at any time affected any of the following places: the folds of the elbows, behind the knees, in front of the ankles, under the buttocks, or around the neck, ears, or eyes?

Source releases
1
Available cycles
2005-2006
Dataset
Allergy
CDC/NCHS source releases
ALD020Indexed NHANES variable

Questionnaire

During your life, on how many days have you had at least one drink of alcohol?

Source releases
11
Available cycles
1999-2000 · 2005-2006 · 2007-2008 · 2009-2010 · 2009-2010 · 2011-2012 · 2013-2014 · 2015-2016 · 2017-2018 · 2017-2020 · 2021-2023
Dataset
Alcohol Use - Youth
CDC/NCHS source releases
ALD030Indexed NHANES variable

Questionnaire

During the past 30 days, on how many days did you have at least one drink of alcohol?

Source releases
11
Available cycles
1999-2000 · 2005-2006 · 2007-2008 · 2009-2010 · 2009-2010 · 2011-2012 · 2013-2014 · 2015-2016 · 2017-2018 · 2017-2020 · 2021-2023
Dataset
Alcohol Use - Youth
CDC/NCHS source releases
ALD040Indexed NHANES variable

Questionnaire

During the past 30 days, on how many days did you have 5 or more drinks of alcohol in a row, that is, within a couple of hours?

Source releases
11
Available cycles
1999-2000 · 2005-2006 · 2007-2008 · 2009-2010 · 2009-2010 · 2011-2012 · 2013-2014 · 2015-2016 · 2017-2018 · 2017-2020 · 2021-2023
Dataset
Alcohol Use - Youth
CDC/NCHS source releases
ALD100Indexed NHANES variable

Questionnaire

The next questions are about drinking alcoholic beverages. Included are liquor (such as whiskey or gin), beer, wine, wine coolers, and any other type of alcoholic beverage. In any one year, {have you/has SP} had at least 12 drinks of any type of alcoholic beverage? By a drink, I mean a 12 oz. beer, a 4 oz. glass of wine, or an ounce of liquor.

Source releases
1
Available cycles
2001-2002
Dataset
Alcohol Use
CDC/NCHS source releases
ALD240Indexed NHANES variable

Questionnaire

The next questions are about alcoholic beverages. When answering think about {your/SP's} use over the past 30 days. How often did {you/SP} drink beer or lite beer?

Source releases
1
Available cycles
1999-2000
Dataset
Diet Behavior & Nutrition
CDC/NCHS source releases
ALD260Indexed NHANES variable

Questionnaire

[During the past 30 days] how often did {you/SP} drink hard liquor such as tequila, gin, vodka, scotch, rum, wiskey, or liquers, either alone or mixed?

Source releases
1
Available cycles
1999-2000
Dataset
Diet Behavior & Nutrition
CDC/NCHS source releases
ALQ010Indexed NHANES variable

Questionnaire

English Text: The following questions ask about alcohol use. This includes beer, wine, wine coolers, and liquor such as rum, gin, vodka, or whiskey. This does not include drinking a few sips of wine for religious purposes. How old were you when you had your first drink of alcohol, other than a few sips?

Source releases
11
Available cycles
1999-2000 · 2005-2006 · 2007-2008 · 2009-2010 · 2009-2010 · 2011-2012 · 2013-2014 · 2015-2016 · 2017-2018 · 2017-2020 · 2021-2023
Dataset
Alcohol Use - Youth
CDC/NCHS source releases
ALQ100Indexed NHANES variable

Questionnaire

The next questions are about drinking alcoholic beverages. Included are liquor (such as whiskey or gin), beer, wine, wine coolers, and any other type of alcoholic beverage. In any one year, {have you/has SP} had at least 12 drinks of any type of alcoholic beverage? By a drink, I mean a 12 oz. beer, a 4 oz. glass of wine, or an ounce of liquor.

Source releases
1
Available cycles
1999-2000
Dataset
Alcohol Use
CDC/NCHS source releases
ALQ101Indexed NHANES variable

Questionnaire

The next questions are about drinking alcoholic beverages. Included are liquor (such as whiskey or gin), beer, wine, wine coolers, and any other type of alcoholic beverage. In any one year, {have you/has SP} had at least 12 drinks of any type of alcoholic beverage? By a drink, I mean a 12 oz. beer, a 4 oz. glass of wine, or an ounce of liquor.

Source releases
7
Available cycles
2003-2004 · 2005-2006 · 2007-2008 · 2009-2010 · 2011-2012 · 2013-2014 · 2015-2016
Dataset
Alcohol Use
CDC/NCHS source releases
ALQ110Indexed NHANES variable

Questionnaire

In {your/SP's} entire life, {have you/has he/ has she} had at least 12 drinks of any type of alcoholic beverage?

Source releases
9
Available cycles
1999-2000 · 2001-2002 · 2003-2004 · 2005-2006 · 2007-2008 · 2009-2010 · 2011-2012 · 2013-2014 · 2015-2016
Dataset
Alcohol Use
CDC/NCHS source releases
ALQ111Indexed NHANES variable

Questionnaire

The next questions are about drinking alcoholic beverages. Included are liquor (such as whiskey or gin), beer, wine, wine coolers, and any other type of alcoholic beverage. In {your/SP's} entire life, {have you/has he/has she} had at least 1 drink of any kind of alcohol, not counting small tastes or sips? By a drink, I mean a 12 oz. beer, a 5 oz. glass of wine, or one and a half ounces of liquor.

Source releases
3
Available cycles
2017-2018 · 2017-2020 · 2021-2023
Dataset
Alcohol Use
CDC/NCHS source releases
ALQ120QIndexed NHANES variable

Questionnaire

In the past 12 months, how often did {you/SP} drink any type of alcoholic beverage? PROBE: How many days per week, per month, or per year did {you/SP} drink?

Source releases
9
Available cycles
1999-2000 · 2001-2002 · 2003-2004 · 2005-2006 · 2007-2008 · 2009-2010 · 2011-2012 · 2013-2014 · 2015-2016
Dataset
Alcohol Use
CDC/NCHS source releases
ALQ130Indexed NHANES variable

Questionnaire

In the past 12 months, on those days that {you/SP} drank alcoholic beverages, on the average, how many drinks did {you/he/she} have?

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
Alcohol Use
CDC/NCHS source releases
ALQ140QIndexed NHANES variable

Questionnaire

In the past 12 months, on how many days did {you/SP} have 5 or more drinks of any alcoholic beverage? PROBE: How many days per week, per month, or per year did {you/SP} have 5 or more drinks in a single day?

Source releases
6
Available cycles
1999-2000 · 2001-2002 · 2003-2004 · 2005-2006 · 2007-2008 · 2009-2010
Dataset
Alcohol Use
CDC/NCHS source releases
ALQ151Indexed NHANES variable

Questionnaire

Was there ever a time or times in {your/SP's} life when {you/he/she} drank {DISPLAY NUMBER} or more drinks of any kind of alcoholic beverage almost every day?

Source releases
6
Available cycles
2011-2012 · 2013-2014 · 2015-2016 · 2017-2018 · 2017-2020 · 2021-2023
Dataset
Alcohol Use
CDC/NCHS source releases