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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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NDA provides a single access to de-identified autism research data. For permission to download data, you will need an NDA account with approved access to NDA or a connected repository (AGRE, IAN, or the ATP). For NDA 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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Face Puzzle Task



Download Definition as
Download Submission Template as
Element NameData TypeSizeRequiredDescriptionValue RangeNotesAliases
subjectkeyGUIDRequiredThe NDAR Global Unique Identifier (GUID) for research subjectNDAR*guid
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 fieldsubject_id
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.
sexString20RequiredSex of the subjectM;FM = Male; F = Femalegender
fpa_cor1IntegerRecommendedFPA, task1, accuracy0;10=Incorrect; 1=Correct
fpa_cor2IntegerRecommendedFPA, task2, accuracy0;10=Incorrect; 1=Correct
fpa_cor3IntegerRecommendedFPA, task3, accuracy0;10=Incorrect; 1=Correct
fpa_cor4IntegerRecommendedFPA, task4, accuracy0;10=Incorrect; 1=Correct
fpa_cor5IntegerRecommendedFPA, task5, accuracy0;10=Incorrect; 1=Correct
fpa_cor6IntegerRecommendedFPA, task6, accuracy0;10=Incorrect; 1=Correct
fpa_cor7IntegerRecommendedFPA, task7, accuracy0;10=Incorrect; 1=Correct
fpa_cor8IntegerRecommendedFPA, task8, accuracy0;10=Incorrect; 1=Correct
fpa_cor9IntegerRecommendedFPA, task9, accuracy0;10=Incorrect; 1=Correct
fpa_cor10IntegerRecommendedFPA, task10, accuracy0;10=Incorrect; 1=Correct
fpa_cor11IntegerRecommendedFPA, task11, accuracy0;10=Incorrect; 1=Correct
fpa_cor12IntegerRecommendedFPA, task12, accuracy0;10=Incorrect; 1=Correct
fpa_cor13IntegerRecommendedFPA, task13, accuracy0;10=Incorrect; 1=Correct
fpa_cor14IntegerRecommendedFPA, task14, accuracy0;10=Incorrect; 1=Correct
fpa_cor15IntegerRecommendedFPA, task15, accuracy0;10=Incorrect; 1=Correct
fpa_cor16IntegerRecommendedFPA, task16, accuracy0;10=Incorrect; 1=Correct
fpa_cor17IntegerRecommendedFPA, task17, accuracy0;10=Incorrect; 1=Correct
fpa_cor18IntegerRecommendedFPA, task18, accuracy0;10=Incorrect; 1=Correct
fpa_cor19IntegerRecommendedFPA, task19, accuracy0;10=Incorrect; 1=Correct
fpa_cor20IntegerRecommendedFPA, task20, accuracy0;10=Incorrect; 1=Correct
fpa_cor21IntegerRecommendedFPA, task21, accuracy0;10=Incorrect; 1=Correct
fpa_cor22IntegerRecommendedFPA, task22, accuracy0;10=Incorrect; 1=Correct
fpa_cor23IntegerRecommendedFPA, task23, accuracy0;10=Incorrect; 1=Correct
fpa_cor24IntegerRecommendedFPA, task24, accuracy0;10=Incorrect; 1=Correct
fpa_cor25IntegerRecommendedFPA, task25, accuracy0;10=Incorrect; 1=Correct
fpa_rt1FloatRecommendedFPB, task1, reaction timeMillisecond
fpa_rt2FloatRecommendedFPB, task2, reaction timeMillisecond
fpa_rt3FloatRecommendedFPB, task3, reaction timeMillisecond
fpa_rt4FloatRecommendedFPB, task4, reaction timeMillisecond
fpa_rt5FloatRecommendedFPB, task5, reaction timeMillisecond
fpa_rt6FloatRecommendedFPB, task6, reaction timeMillisecond
fpa_rt7FloatRecommendedFPB, task7, reaction timeMillisecond
fpa_rt8FloatRecommendedFPB, task8, reaction timeMillisecond
fpa_rt9FloatRecommendedFPB, task9, reaction timeMillisecond
fpa_rt10FloatRecommendedFPB, task10, reaction timeMillisecond
fpa_rt11FloatRecommendedFPB, task11, reaction timeMillisecond
fpa_rt12FloatRecommendedFPB, task12, reaction timeMillisecond
fpa_rt13FloatRecommendedFPB, task13, reaction timeMillisecond
fpa_rt14FloatRecommendedFPB, task14, reaction timeMillisecond
fpa_rt15FloatRecommendedFPB, task15, reaction timeMillisecond
fpa_rt16FloatRecommendedFPB, task16, reaction timeMillisecond
fpa_rt17FloatRecommendedFPB, task17, reaction timeMillisecond
fpa_rt18FloatRecommendedFPB, task18, reaction timeMillisecond
fpa_rt19FloatRecommendedFPB, task19, reaction timeMillisecond
fpa_rt20FloatRecommendedFPB, task20, reaction timeMillisecond
fpa_rt21FloatRecommendedFPB, task21, reaction timeMillisecond
fpa_rt22FloatRecommendedFPB, task22, reaction timeMillisecond
fpa_rt23FloatRecommendedFPB, task23, reaction timeMillisecond
fpa_rt24FloatRecommendedFPB, task24, reaction timeMillisecond
fpa_rt25FloatRecommendedFPB, task25, reaction timeMillisecond
fpb_cor1IntegerRecommendedFPB, task1, accuracy0;10=Incorrect; 1=Correct
fpb_cor2IntegerRecommendedFPB, task2, accuracy0;10=Incorrect; 1=Correct
fpb_cor3IntegerRecommendedFPB, task3, accuracy0;10=Incorrect; 1=Correct
fpc_cor4IntegerRecommendedFPB, task4, accuracy0;10=Incorrect; 1=Correct
fpb_cor5IntegerRecommendedFPB, task5, accuracy0;10=Incorrect; 1=Correct
fpb_cor6IntegerRecommendedFPB, task6, accuracy0;10=Incorrect; 1=Correct
fpb_cor7IntegerRecommendedFPB, task7, accuracy0;10=Incorrect; 1=Correct
fpb_cor8IntegerRecommendedFPB, task8, accuracy0;10=Incorrect; 1=Correct
fpb_cor9IntegerRecommendedFPB, task9, accuracy0;10=Incorrect; 1=Correct
fpb_cor10IntegerRecommendedFPB, task10, accuracy0;10=Incorrect; 1=Correct
fpb_cor11IntegerRecommendedFPB, task11, accuracy0;10=Incorrect; 1=Correct
fpb_cor12IntegerRecommendedFPB, task12, accuracy0;10=Incorrect; 1=Correct
fpb_cor13IntegerRecommendedFPB, task13, accuracy0;10=Incorrect; 1=Correct
fpb_cor14IntegerRecommendedFPB, task14, accuracy0;10=Incorrect; 1=Correct
fpb_cor15IntegerRecommendedFPB, task15, accuracy0;10=Incorrect; 1=Correct
fpb_cor16IntegerRecommendedFPB, task16, accuracy0;10=Incorrect; 1=Correct
fpb_cor17IntegerRecommendedFPB, task17, accuracy0;10=Incorrect; 1=Correct
fpb_cor18IntegerRecommendedFPB, task18, accuracy0;10=Incorrect; 1=Correct
fpb_cor19IntegerRecommendedFPB, task19, accuracy0;10=Incorrect; 1=Correct
fpb_cor20IntegerRecommendedFPB, task20, accuracy0;10=Incorrect; 1=Correct
fpb_cor21IntegerRecommendedFPB, task21, accuracy0;10=Incorrect; 1=Correct
fpb_cor22IntegerRecommendedFPB, task22, accuracy0;10=Incorrect; 1=Correct
fpb_cor23IntegerRecommendedFPB, task23, accuracy0;10=Incorrect; 1=Correct
fpb_cor24IntegerRecommendedFPB, task24, accuracy0;10=Incorrect; 1=Correct
fpc_cor25IntegerRecommendedFPB, task25, accuracy0;10=Incorrect; 1=Correct
fpb_rt1FloatRecommendedFPA, task1, reaction timeMillisecond
fpb_rt2FloatRecommendedFPA, task2, reaction timeMillisecond
fpb_rt3FloatRecommendedFPA, task3, reaction timeMillisecond
fpb_rt4FloatRecommendedFPA, task4, reaction timeMillisecond
fpb_rt5FloatRecommendedFPA, task5, reaction timeMillisecond
fpb_rt6FloatRecommendedFPA, task6, reaction timeMillisecond
fpb_rt7FloatRecommendedFPA, task7, reaction timeMillisecond
fpb_rt8FloatRecommendedFPA, task8, reaction timeMillisecond
fpb_rt9FloatRecommendedFPA, task9, reaction timeMillisecond
fpb_rt10FloatRecommendedFPA, task10, reaction timeMillisecond
fpb_rt11FloatRecommendedFPA, task11, reaction timeMillisecond
fpb_rt12FloatRecommendedFPA, task12, reaction timeMillisecond
fpb_rt13FloatRecommendedFPA, task13, reaction timeMillisecond
fpb_rt14FloatRecommendedFPA, task14, reaction timeMillisecond
fpb_rt15FloatRecommendedFPA, task15, reaction timeMillisecond
fpb_rt16FloatRecommendedFPA, task16, reaction timeMillisecond
fpb_rt17FloatRecommendedFPA, task17, reaction timeMillisecond
fpb_rt18FloatRecommendedFPA, task18, reaction timeMillisecond
fpb_rt19FloatRecommendedFPA, task19, reaction timeMillisecond
fpb_rt20FloatRecommendedFPA, task20, reaction timeMillisecond
fpb_rt21FloatRecommendedFPA, task21, reaction timeMillisecond
fpb_rt22FloatRecommendedFPA, task22, reaction timeMillisecond
fpb_rt23FloatRecommendedFPA, task23, reaction timeMillisecond
fpb_rt24FloatRecommendedFPA, task24, reaction timeMillisecond
fpb_rt25FloatRecommendedFPA, task25, reaction timeMillisecond
version_formString100RecommendedForm used/assessment name
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: facep01 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.