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Essential Measures are only those items that are critical to the collection of the Measure or are necessary for the interpretation of results. Essential Measures are integral to the Measure. Without such information the data collected would be incomplete and/or misleading.
An additional PhenX Measure that the user may find helpful based on the selection of a particular PhenX Measure. Related PhenX Measures can include additional Measures that are needed to calculate a Derived Variable (e.g., Weight and Height are needed to calculate BMI), Measures that are commonly used in presentations and publications to present the value of the chosen Measures (e.g., Height and Weight by Race and Ethnicity), Measures that are conceptually related to the chosen Measure (e.g., Current Educational Attainment is conceptually related to Annual Family Income and Arm Span is conceptually related to Height), Measures that are physiologically and/or biologically related to the chosen Measure (e.g., Stroke and Heart Disease). Related PhenX Measures are suggestions only.
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Browse » Domains » Alcohol, Tobacco and Other Substances » Substances - Age of First Use

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Measure: Substances - Age of First Use   #031200


Question asking the respondent how old he or she was when he or she first use the substance.


This measure assesses when the participant’s substance use began.



Drugs, substance use, illicit substances, cannabis, marijuana, THC, LSD, acid, angel dust, phencyclidine, PCP, peyote, mescaline, psilocybin, ecstasy, MDMA, sedative, tranquilizer, pain relievers, stimulant, prescription drugs, cocaine, crack cocaine, hallucinogen, inhalant, solvent, heroin, methamphetamine, substance abuse, National Survey on Drug Use and Health, NSDUH, gerontology, aging, geriatrics

Measure Release Date: November 21, 2016

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