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Data Structures with shared data
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ABCD Youth Alcohol Screen

11,877 Shared Subjects

Past day alcohol use - Breathalyzer
Clinical Assessments
Phys Exam
11/08/2017
yalcs01
10/27/2020
View Change History
01
Query Element Name Data Type Size Required Condition 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 gender
Query bal_test1_result_y Integer Recommended Breathalyzer Test 1 Result: 1::11 3=Not applicable (not randomized) ; 1=Negative (.000) ; 2=Positive (.001 or above) ; 4=Participant unable to complete (tried 3 times) ; 5=Participant refused ; 7=Not collected - remote completion ; 8=Institution not authorized to collect samples due to COVID ; 9=Staff discomfort due to COVID ; 10=Exceed 15min of < 6ft distance from youth (COVID) ; 11=Not approved by ABCD for collection ; 6=Not collected (other) biospec_alc_test1_result
bal1_dot_y Date Recommended bal_test1_result_y == 1 || bal_test1_result_y == 2 Breathalyzer Test 1 Date Completed: biospec_alc1_date
Query bal_test2_result_y Integer Recommended bal_test1_result_y == 2 Breathalyzer Test 2 Result: 1::6 1 = Negative (.000); 2 = Positive (.001 or above); 4 = Participant unable to complete (tried 3 times); 5 = Participant refused; 6 = Not collected (other) biospec_alc_test2_result
bal2_dot_y Date Recommended bal_test2_result_y == 1 || bal_test2_result_y == 2 Breathalyzer Test 2 Date Completed: biospec_alc2_date
Query bal2_need Integer Recommended Is BAL Test Day 2 needed for this participant? 0 ; 1 1 = Yes; 0 = No biospec_alc2_need
Query bal2_test1_result_y Integer Recommended bal2_need == 1 Breathalyzer Test 1 Day 2 Result: 1::6 1 = Negative (.000); 2 = Positive (.001 or above); 4 = Participant unable to complete (tried 3 times); 5 = Participant refused; 6 = Not collected (other) biospec_alc2_test1_result
bal21_dot_y Date Recommended bal2_test1_result_y == 1 || bal2_test1_result_y == 2 && bal2_need == 1 Breathalyzer Test1 Day 2 Date Completed: biospec_alc21_date
Query bal2_test2_result_y Integer Recommended bal2_test1_result_y == 2 && bal2_need == 1 && bal2_need == 1 Breathalyzer Test 2 Day 2 Result: 1::6 1 = Negative (.000); 2 = Positive (.001 or above); 4 = Participant unable to complete (tried 3 times); 5 = Participant refused; 6 = Not collected (other) biospec_alc2_test2_result
bal22_dot_y Date Recommended bal2_test2_result_y == 1 || bal2_test2_result_y == 2 && bal2_need == 1 Breathalyzer Test 2 Day 2 Date Completed: biospec_alc22_date
eventname String 60 Recommended The event name for which the data was collected
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:

  • Element Name: This is the standard element name
  • Data Type: Which type of data this element is, e.g. String, Float, File location.
  • Size: If applicable, the character limit of this element
  • Required: This column displays whether the element is Required for valid submissions, Recommended for valid submissions, Conditional on other elements, or Optional
  • Description: A basic description
  • Value Range: Which values can appear validly in this element (case sensitive for strings)
  • Notes: Expanded description or notes on coding of values
  • Aliases: A list of currently supported Aliases (alternate element names)
  • For valid elements with shared data, on the far left is a Filter button you can use to view a summary of shared data for that element and apply a query filter to your Cart based on selected value ranges

At the top of this page you can also:

  • Use the search bar to filter the elements displayed. This will not filter on the Size of Required columns
  • Download a copy of this definition in CSV format
  • Download a blank CSV submission template prepopulated with the correct structure header rows ready to fill with subject records and upload

Please email the The NDA Help Desk with any questions.