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Frequently Asked Questions


NDA Help Center

Filter Cart

The Filter Cart provides a powerful way to query and access data for which you may be interested.  

A few points related to the filter cart are important to understand with the NDA Query/Filter implementation: 

First, the filter cart is populated asyncronously.  So, when you run a query, it may take a moment to populate but this will happen in the background so you can define other queries during this time.  

When you are adding your first filter, all data associated with your query will be added to the filter cart (whether it be a collection, a concept, a study, a data structure/elment or subjects). Not all data structures or collections will necessarily be displayed.  For example, if you select the NDA imaging structure image03, and further restrict that query to scan_type fMRI, only fMRI images will appear and only the image03 structure will be shown.  To see other data structures, select "Find All Subject Data" which will query all data for those subjects. When a secord or third filter is applied, an AND condition is used.  A subject must exist in all filters.  If the subject does not appear in any one filter, that subjects data will not be included in your filter cart. If that happens, clear your filter cart, and start over.  

It is best to package more data than you need and access those data using other tools, independent of the NDA (e.g. miNDAR snapshot), to limit the data selected.  If you have any questions on data access, are interested in using avaialble web services, or need help accessing data, please contact us for assistance.  

Frequently Asked Questions



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NDAR provides a single access to de-identified autism research data. For permission to download data, you will need an NDAR account with approved access to NDAR or a connected repository (AGRE, IAN, or the ATP). For NDAR access, you need to be a research investigator sponsored by an NIH recognized institution with federal wide assurance. See Request Access for more information.

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The filters you have selected from various query interfaces will be stored here, in the 'Filter Cart'. The database will be queried using filters added to your 'Filter Cart', when multiple filters are defined, each will be executed using 'AND' logic, so with each filter that is applied the result set gets smaller.

From the 'Filter Cart' you can inspect each of the filters that have been defined, and you also have the option to remove filters. The 'Filter Cart' itself will display the number of filters applied along with the number of subjects that are identified by the combination of those filters. For example a GUID filter with two subjects, followed by a GUID filter for just one of those subjects would return only data for the subject that is in both GUID filters.

If you have a question about the filter cart, or underlying filters please contact the help desk at The NDA Help Desk

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Data Structures with shared data
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ABCD Children's Report of Parental Behavioral Inventory



Youth Report of Caregiver acceptance (study caregiver and secondary caregiver)

Download Definition as
Download Submission Template as
Element NameData TypeSizeRequiredConditionDescriptionValue RangeNotesAliases
subjectkeyGUIDRequiredThe NDAR Global Unique Identifier (GUID) for research subjectNDAR*
src_subject_idString20RequiredSubject ID how it's defined in lab/project
interview_dateDateRequiredDate on which the interview/genetic test/sampling/imaging/biospecimen was completed. MM/DD/YYYYRequired field
interview_ageIntegerRequiredAge in months at the time of the interview/test/sampling/imaging.0 :: 1260Age 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.
genderString20RequiredSex of the subjectM;FM = Male; F = Femalesex
crpbi_parent1_yIntegerRecommendedFirst caregiver (caregiver participating in study/completing protocol). Makes me feel better after talking over my worries with him/her1::31 = Not like him/her; 2 = Somewhat like him/her; 3 = A lot like him/hercrpbi_acceptance_studycaregiver1, crpbi_studycaregiver1
crpbi_parent2_yIntegerRecommendedFirst caregiver (caregiver participating in study/completing protocol). Smiles at me very often.1::31 = Not like him/her; 2 = Somewhat like him/her; 3 = A lot like him/hercrpbi_acceptance_studycaregiver2, crpbi_studycaregiver2
crpbi_parent3_yIntegerRecommendedFirst caregiver (caregiver participating in study/completing protocol). Is able to make me feel better when I am upset.1::31 = Not like him/her; 2 = Somewhat like him/her; 3 = A lot like him/hercrpbi_acceptance_studycaregiver3, crpbi_studycaregiver3
crpbi_parent4_yIntegerRecommendedFirst caregiver (caregiver participating in study/completing protocol). Believes in showing his/her love for me.1::31 = Not like him/her; 2 = Somewhat like him/her; 3 = A lot like him/hercrpbi_acceptance_studycaregiver4, crpbi_studycaregiver4
crpbi_parent5_yIntegerRecommendedFirst caregiver (caregiver participating in study/completing protocol). Is easy to talk to.1::31 = Not like him/her; 2 = Somewhat like him/her; 3 = A lot like him/hercrpbi_acceptance_studycaregiver5, crpbi_studycaregiver5
crpbi_caregiver1_yIntegerRecommendedIs there a second adult who cares for you, that you spend a significant amount of time with, like your other parent, step-parent, grandparent, aunt or uncle?0 ; 11 = Yes; 0 = Nocrpbi_acceptance_caregiver1
crpbi_caregiver2_yIntegerRecommended crpbi_caregiver1_y == 1Who is the second caregiver? If more than one caregiver, choose the person you spend the most time with.1::71 = mother; 2 = father; 3 = grandmother; 4 = grandfather; 5 = aunt; 6 = uncle; 7 = othercrpbi_acceptance_caregiver2
crpbi_caregiver12_yIntegerRecommended crpbi_caregiver1_y == 1Second caregiver. Makes me feel better after talking over my worries with him/her.1::31 = Not like him/her; 2 = Somewhat like him/her; 3 = A lot like him/hercrpbi_acceptance_caregiver12
crpbi_caregiver13_yIntegerRecommended crpbi_caregiver1_y == 1Second caregiver. Smiles at me very often.1::31 = Not like him/her; 2 = Somewhat like him/her; 3 = A lot like him/hercrpbi_acceptance_caregiver13
crpbi_caregiver14_yIntegerRecommended crpbi_caregiver1_y == 1Second caregiver. Is able to make me feel better when I am upset.1::31 = Not like him/her; 2 = Somewhat like him/her; 3 = A lot like him/hercrpbi_acceptance_caregiver14
crpbi_caregiver15_yIntegerRecommended crpbi_caregiver1_y == 1Second caregiver. Believes in showing his/her love for me.1::31 = Not like him/her; 2 = Somewhat like him/her; 3 = A lot like him/hercrpbi_acceptance_caregiver15
crpbi_caregiver16_yIntegerRecommended crpbi_caregiver1_y == 1Second caregiver. Is easy to talk to.1::31 = Not like him/her; 2 = Somewhat like him/her; 3 = A lot like him/hercrpbi_acceptance_caregiver16
eventnameString60RecommendedThe event name for which the data was collected
crpbi_studycaregiver_idIntegerRecommendedWho is the caregiver that is participating in the study with you today?1 ; 2 ; 3 ; 4 ; 5 ; 6 ; 71 = mother; 2 = father; 3 = grandmother; 4 = grandfather; 5 = aunt; 6 = uncle; 7 = other
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.

Distribution for DataStructure: crpbi01 and Element:
Chart Help

Filters enable researchers to view the data shared in NDA before applying for access or for selecting specific data for download or NDA Study assignment. For those with access to NDA shared data, you may select specific values to be included by selecting an individual bar chart item or by selecting a range of values (e.g. interview_age) using the "Add Range" button. Note that not all elements have appropriately distinct values like comments and subjectkey and are not available for filtering. Additionally, item level detail is not always provided by the research community as indicated by the number of null values given.

Filters for multiple data elements within a structure are supported. Selections across multiple data structures will be supported in a future version of NDA.