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Daily Sessions, Frequency, Age of Onset, and Quantity of Cannabis Use

0 Shared Subjects

The first psychometrically sound inventory for measuring frequency, age of onset, and quantity of cannabis use, represents an improvement upon the reliance on in-house survey questions because it permits for comparisons across studies using the same items. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5446174/
Clinical Assessments
Substance Use
11/19/2021
dfaq_cu01
09/28/2022
View Change History
01
Query Element Name Data Type Size Required Description Value Range Notes Aliases
subjectkey GUID Required The NDAR Global Unique Identifier (GUID) for research subject NDAR*
src_subject_id String 20 Required Subject ID how it's defined in lab/project
interview_date Date Required Date on which the interview/genetic test/sampling/imaging/biospecimen was completed. MM/DD/YYYY
interview_age Integer Required Age in months at the time of the interview/test/sampling/imaging. 0 :: 1260 Age is rounded to chronological month. If the research participant is 15-days-old at time of interview, the appropriate value would be 0 months. If the participant is 16-days-old, the value would be 1 month.
sex String 20 Required Sex of subject at birth M;F; O; NR M = Male; F = Female; O=Other; NR = Not reported
dfaq1 Integer Recommended Have you ever used cannabis? 0;1; 0 = No; 1 = Yes
dfaq2 Integer Recommended Which of the following best captures when you last used cannabis? 1::11;999 1 = over a year ago; 2= 9-12 months ago; 3= 6-9 months ago; 4= 3-6 months ago; 5= 1-3 months ago; 6= less than 1 month ago; 7= last week; 8= this week; 9= yesterday; 10= today; 11= I am currently high; 999= Missing
dfaq2b Integer Recommended How high are you right now? 0::4;999 0 = I am not at all high; 1 = I am a little bit high; 2 = I am moderately high; 3 = I am very high; 4 = I am extremely high; 999 = Missing
dfaq3 Integer Recommended Which of the following best captures the average frequency you currently use cannabis? 0::12;999 0=I do not use cannabis; 1= less than once a year; 2=once a year; 3=once every 3-6 months (2-4 times/yr); 4=once every 2 months (6 times/yr); 5= once a month (12 times/yr); 6=2-3 times a month; 7=once a week; 8=twice a week; 9=3-4 times a week; 10=5-6 times a week; 11=once a day; 12=more than once a day; 999=Missing
dfaq4 Integer Recommended Which of the following best captures how long you have been using cannabis at this frequency? 1::12;999 1=less than a month; 2=1-3 months; 3=3-6 months; 4=6-9 months; 5= 9-12 months; 6=1-2 years; 7=2-3 years; 8=3-5 years; 9=5-10 years; 10=10-15 years; 11=15-20 years; 12=more than 20 years; 999=Missing
dfaq5 Integer Recommended Before the period of time you indicated above, how frequently did you use cannabis? 0::12;999 0=I do not use cannabis; 1= less than once a year; 2=once a year; 3=once every 3-6 months (2-4 times/yr); 4=once every 2 months (6 times/yr); 5= once a month (12 times/yr); 6=2-3 times a month; 7=once a week; 8=twice a week; 9=3-4 times a week; 10=5-6 times a week; 11=once a day; 12=more than once a day; 999=Missing
dfaq6 Integer Recommended How many days of the past week did you use cannabis? 0::7;999 0 = 0 days; 1 = 1 day; 2 = 2 days; 3 = 3 days; 4 = 4 days; 5 = 5 days; 6 = 6 days; 7 = 7 days; 999 = Missing
dfaq7 Integer Recommended Approximately how many days of the past month did you use cannabis?
dfaq8 Integer Recommended Which of the following best captures the number of times you have used cannabis in your entire life? 1::10;999 1=1-5 times in my life; 2=6-10 times in my life; 3=11-50 times in my life; 4=51-100 times in my life; 5=101-500 times in my life; 6=501-1000 times in my life; 7=1001-2000 times in my life; 8=2001-5000 times in my life; 9=5001-10,000 times in my life; 10=More than 10,000 times in my life; 999=Missing
dfaq9 Integer Recommended Which of the following best captures your pattern of cannabis use throughout the week? 0::3;999 0=I do not use cannabis at all; 1=I only use cannabis on the weekends; 2=I only use cannabis on weekdays; 3=I use cannabis on weekends and weekdays; 999=Missing
dfaq10 Integer Recommended How many hours after waking up do you typically first use cannabis? 0::8;999 0= I do not use cannabis at all; 1= 12-18 hours after waking up; 2= 9-12 hours after waking up; 3= 6-9 hours after waking up; 4= 3-6 hours after waking up; 5= 1-3 hours after waking up; 6= within 1 hour of waking up; 7= within 1/2 hour of waking up; 8= immediately upon waking up; 999= Missing
dfaq11 Integer Recommended How many times a day, on a typical weekday, do you use cannabis?
dfaq12 Integer Recommended How many times a day, on a typical weekend, do you use cannabis?
dfaq13 Integer Recommended What is the primary method you use to ingest cannabis? 1::8;999 0 = I do not use cannabis; 1= Joints; 2= Blunts (cigar sized joints); 3= Hand Pipe; 4= Bong (water pipe); 5= Hookah; 6= Vaporizer (e.g., Volcano, Vape pen); 7= Edibles; 8= Other; 999= Missing
dfaq13other String 50 Recommended Other primary method to ingest cannabis
dfaq14 Integer Recommended Which of the following other methods to ingest cannabis do you use regularly (at least 25% of the time you use cannabis)? 1::8;999 0= None; 1= Joints; 2= Blunts (cigar sized joints); 3= Hand pipe; 4= Bong (water pipe); 5= Hookah; 6= Vaporizer (e.g., Volcano, Vape pen); 7= Edibles; 8= Other; 999= Missing
dfaq14other String 50 Recommended Other method to ingest cannabis regularly
dfaq15 Integer Recommended What is the primary form of cannabis you use? 0::4;999 0= None; 1= Marijuana; 2= Concentrates (e.g., Oil, Wax, Shatter, Butane Hash Oil, Dabs); 3= Edibles; 4= Other; 999= Missing
dfaq15other String 50 Recommended Other primary form of cannabis use
dfaq16 Integer Recommended What other forms of cannabis do you use regularly (at least 25% of the time you use cannabis)? 0::4 0= None; 1= Marijuana; 2= Concentrates (e.g., Oil, Wax, Shatter, Butane Hash Oil, Dabs); 3= Edibles; 4= Other
dfaq16other String 50 Recommended Other form of cannabis do you use regularly
dfaq17 String 50 Recommended In a typical session, how much marijuana do you personally use?
dfaq18 String 50 Recommended On a typical day you use marijuana, how much do you personally use?
dfaq19 String 50 Recommended In a typical week you use marijuana, how much marijuana do you personally use?
dfaq20 Integer Recommended On a typical day you use marijuana, how many sessions do you have?
dfaq21 Integer Recommended What is the average THC content of the marijuana you typically use? 1::7;999 1= 0-4%; 2= 5-9%; 3= 10-14%; 4= 15-19%; 5= 20-24%; 6= 25-30%; 7= greater than 30%; 999= Missing
dfaq22 String 50 Recommended In a typical session you use cannabis concentrates, how many hits do you personally take?
dfaq23 String 50 Recommended On a typical day you use cannabis concentrates, how many hits do you personally take?
dfaq24 String 50 Recommended How many hits of cannabis concentrates did you personally take yesterday?
dfaq25 String 50 Recommended On a typical day you use cannabis concentrates, how many sessions do you have?
dfaq26 Integer Recommended What is the average THC content of the concentrates you typically use? 1::10;999 1= 0-9%; 2= 10-19%; 3= 20-29%; 4= 30-39%; 5= 40-49%; 6= 50-59%; 7= 60-69%; 8= 70-79%; 9= 80-90%; 10= greater than 90%; 999= Missing
dfaq27 String 50 Recommended When you eat edibles how many milligrams of THC do you personall ingest in a typical session?
dfaq28 String 20 Recommended What is your current age? Indicate Age in years
dfaq29 Integer Recommended How many years in total have you used cannabis?
dfaq30 Integer Recommended How old were you when you FIRST tried cannabis? Indicate Age in years
dfaq31 Integer Recommended Has there been any time in your life when you used cannabis regularly (2 or more times per month for 6 months or longer)? 0;1 0 = No; 1 = Yes
dfaq31b Integer Recommended How old were you when you FIRST STARTED using cannabis regularly (2 or more times/month)? Indicate Age in years
dfaq31c Integer Recommended Has there been any time in your life when you used cannabis on a daily or near daily basis for 6 months or longer? 0;1 0 = No; 1 = Yes
dfaq31ci Integer Recommended How old were you when you FIRST STARTED using cannabis on a daily or near daily basis? Indicate Age in years
dfaq32 Integer Recommended Which of the following best captures the average frequency that you used cannabis before the age of 16? 0::12 0= more than once a day; 1= once a day; 2= 5-6 times a week; 3= 3-4 times a week; 4= twice a week; 5= once a week; 6= 2-3 times a month; 7= once a month; 8= once every 2 months (6 times/yr.); 9= once every 3-6 months (2-4 times/yr.); 10= once a year; 11= less than once a year; 12= never
dfaq33 Integer Recommended Do you have a physician's recommendation to use cannabis for medicinal purposes? 0::2 0= No; 1= Yes; 2= Yes, but I use it for both medicinal and recreational purposes
dfaq33b String 100 Recommended Which medical condition(s) do you use cannabis for?
dfaq33c String 20 Recommended What percentage of the time do you use cannabis for recreational (rather than medicinal) purposes?
dfaq34 Integer Recommended Have you in the past had a disease or illness you believe was caused or aggravated by your smoking marijuana? 0;1 0 = No; 1 = Yes
dfaq35 Integer Recommended Do you have any symptoms now that you believe are caused by your smoking marijuana? 0;1 0 = No; 1 = Yes
dfaq36 Integer Recommended Do you have a disease or illness now that you believe is caused or aggravated by your smoking marijuana? 0;1 0 = No; 1 = Yes
dfaq_timepoint Integer Recommended The timepoint at which the data was collected 0::4 0=Baseline; 1= 3 months; 2= 6 months; 3= 9 months; 4= 12 months
dfaq_cu_14_6 Integer Recommended Which of the following other methods to ingest cannabis do you use regularly (at least 25% of the time you use cannabis)? Vaporizer (e.g., Volcano, Vape pen) 0;1 0=No; 1=Yes
dfaq_cu_14_7 Integer Recommended Which of the following other methods to ingest cannabis do you use regularly (at least 25% of the time you use cannabis)? Edibles 0;1 0=No; 1=Yes
dfaq_cu_14_8 Integer Recommended Which of the following other methods to ingest cannabis do you use regularly (at least 25% of the time you use cannabis)? Other 0;1 0=No; 1=Yes
dfaq_cu_16_0 Integer Recommended What other forms of cannabis do you use regularly (at least 25% of the time you use cannabis)? None 0;1 0=No; 1=Yes
dfaq_cu_16_a Integer Recommended What other forms of cannabis do you use regularly (at least 25% of the time you use cannabis)? Marijuana 0;1 0=No; 1=Yes
dfaq_cu_16_b Integer Recommended What other forms of cannabis do you use regularly (at least 25% of the time you use cannabis)? Concentrates (e.g., Oil, Wax, Shatter, Butane Hash Oil, Dabs) 0;1 0=No; 1=Yes
dfaq_cu_16_c Integer Recommended What other forms of cannabis do you use regularly (at least 25% of the time you use cannabis)? Edibles 0;1 0=No; 1=Yes
dfaq_cu_16_d Integer Recommended What other forms of cannabis do you use regularly (at least 25% of the time you use cannabis)? Other 0;1 0=No; 1=Yes
name_study String 50 Recommended Name of initial study
dfaq_cu_14_0 Integer Recommended Which of the following other methods to ingest cannabis do you use regularly (at least 25% of the time you use cannabis)? None 0;1 0=No; 1=Yes
dfaq_cu_14_1 Integer Recommended Which of the following other methods to ingest cannabis do you use regularly (at least 25% of the time you use cannabis)? Joints 0;1 0=No; 1=Yes
dfaq_cu_14_2 Integer Recommended Which of the following other methods to ingest cannabis do you use regularly (at least 25% of the time you use cannabis)? Blunts (cigar sized joints) 0;1 0=No; 1=Yes
dfaq_cu_14_3 Integer Recommended Which of the following other methods to ingest cannabis do you use regularly (at least 25% of the time you use cannabis)? Hand pipe 0;1 0=No; 1=Yes
dfaq_cu_14_4 Integer Recommended Which of the following other methods to ingest cannabis do you use regularly (at least 25% of the time you use cannabis)? Bong (water pipe) 0;1 0=No; 1=Yes
dfaq_cu_14_5 Integer Recommended Which of the following other methods to ingest cannabis do you use regularly (at least 25% of the time you use cannabis)? Hookah 0;1 0=No; 1=Yes
Data Structure

This page displays the data structure defined for the measure identified in the title and structure short name. The table below displays a list of data elements in this structure (also called variables) and the following information:

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