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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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Memory for Intentions Screening Test



Download Definition as
Download Submission Template as
Element NameData TypeSizeRequiredDescriptionValue RangeNotesAliases
subjectkeyGUIDRequiredThe NDAR Global Unique Identifier (GUID) for research subjectNDAR*ndarid, ndarid2, ndarid3
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.
sexString20RequiredSex of the subjectM;FM = Male; F = Femalegender
stusdyString40RecommendedStudy ID
visnumFloatRecommendedNumeric Visit Number-1.5 = Pre-Screening; -1 = Screening; 0 = Baseline; ## = Visit ## (from 1 to 10); Whole numbers = standard monthly visits; #.001 - #.009 = Unscheduled; #.1 = End of Phase 1; #.2 = End of Phase 2; #.3 = End of Phase 3; #.4 = End of Open Choice Phase; #.5 = End of Study; #.6 = Genetic Analysis; 1000=all visits
aescodeIntegerRecommendedStaff code number of person completing this form
comments_miscString4,000RecommendedMiscellaneous comments on study, interview, methodology relevant to this form data
trial1_2minIntegerRecommended2-minute cues: Trial 10::2
trial2_2minIntegerRecommended2-minute cues: Trial 20::2
trial3_2minIntegerRecommended2-minute cues: Trial 30::2
trial7_2minIntegerRecommended2-minute cues: Trial 70::2
total_2minIntegerRecommended2-minute cues: Total0::8
trial4_15minIntegerRecommended15-minute cues: Trial 40::2
trial5_15minIntegerRecommended15-minute cues: Trial 50::2
trial6_15minIntegerRecommended15-minute cues: Trial 60::2
trial8_15minIntegerRecommended15-minute cues: Trial 80::2
total_15minIntegerRecommended15-minute cues: Total0::8
trial1_timeIntegerRecommendedTime cues: Trial 10::2
trial4_timeIntegerRecommendedTime cues: Trial 40::2
trial7_timeIntegerRecommendedTime cues: Trial 70::2
trial8_timeIntegerRecommendedTime cues: Trial 80::2
total_timeIntegerRecommendedTime cues: Total0::8
trial2_associativeIntegerRecommendedAssociative cues: Trial 20::2
trial3_associativeIntegerRecommendedAssociative cues: Trial 30::2
trial5_associativeIntegerRecommendedAssociative cues: Trial 50::2
trial6_associativeIntegerRecommendedAssociative cues: Trial 60::2
total_associativeIntegerRecommendedAssociative cues: Total0::8
trial1_verbalIntegerRecommendedVerbal responses: Trial 10::2
trial3_verbalIntegerRecommendedVerbal responses: Trial 30::2
trial4_verbalIntegerRecommendedVerbal responses: Trial 40::2
trial7_verbalIntegerRecommendedVerbal responses: Trial 70::2
total_verbalIntegerRecommendedVerbal responses: Total0::8
trial2_actionIntegerRecommendedAction responses: Trial 20::2
trial5_actionIntegerRecommendedAction responses: Trial 50::2
trial6_actionIntegerRecommendedAction responses: Trial 60::2
trial8_actionIntegerRecommendedAction responses: Trial 80::2
total_actionIntegerRecommendedAction responses: Total0::8
mist_summaryscoreFloatRecommendedMIST Summary Score
recognition_scoreIntegerRecommendedRecognition Score
mist_24hIntegerRecommended24-hour Prospective Task Score
call_dateDateRecommendedDate of call
lifeline_007String25RecommendedTime of Call Start
lifeline_008String25RecommendedTime of Call End
comments1String1,000RecommendedComments 1response
pmpctFloatRecommendedPM Errors %
tspctFloatRecommendedTask Sub Errors %
lcpctFloatRecommendedLoss Content Errors %
ltpctFloatRecommendedLoss Time Errors %
plopctFloatRecommendedPlace Losing Omission Errors %
plrpctFloatRecommendedPlace Losing Repetition Errors %
rpctFloatRecommendedRandom Errors %
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: mist01 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.