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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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Cognitive Assessment



Download Definition as
Download Submission Template as
Element NameData TypeSizeRequiredDescriptionValue RangeNotesAliases
subjectkeyGUIDRequiredThe NDAR Global Unique Identifier (GUID) for research subjectNDAR*
src_subject_idString20RequiredSubject ID how it's defined in lab/projectrandid
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
siteString101RecommendedSiteStudy Sitesiteid
visitString50RecommendedVisit nameint1, interval
completedIntegerRecommendedChecks if completed0::30=No; 1=Yes; 2=Yes, lost; 3=Unverifiedd_done, formcomp
subtrial_nameIntegerRecommendedName of subtrial1::31=Crossover; 2=Guanfacine; 3= Open Label MPH
cog_1aIntegerRecommendedAnalog problems attempted0::100
cog_1bIntegerRecommendedAnalog problems completed0::100
cog_201aIntegerRecommendedCancellation P1 correct0::99pg1corde
cog_201bIntegerRecommendedCancellation P1 omission0::99pg1errom
cog_201cIntegerRecommendedCancellation P1 comission0::99pg1errcm
cog_202aIntegerRecommendedCancellation P2 correct0::99pg2corde
cog_202bIntegerRecommendedCancellation P2 omission0::99pg2errom
cog_202cIntegerRecommendedCancellation P2 comission0::99pg2errcm
cog_203aIntegerRecommendedCancellation P3 correct0::99pg3corde
cog_203bIntegerRecommendedCancellation P3 omission0::99pg3errom
cog_203cIntegerRecommendedCancellation P3 comission0::99pg3errcm
cog_204aIntegerRecommendedCancellation P4 correct0::99pg4corde
cog_204bIntegerRecommendedCancellation P4 omission0::99pg4errom
cog_204cIntegerRecommendedCancellation P4 comission0::99pg4errcm
cog_205aIntegerRecommendedCancellation P5 correct0::99pg5corde
cog_205bIntegerRecommendedCancellation P5 omission0::99pg6errom
cog_205cIntegerRecommendedCancellation P5 comission0::99pg5errcm
cog_206aIntegerRecommendedCancellation P6 correct0::99pg6corde
cog_206bIntegerRecommendedCancellation P6 omission0::99pg5errom
cog_206cIntegerRecommendedCancellation P6 comission0::99pg6errcm
cog_207aIntegerRecommendedCancellation P7 correct0::99
cog_207bIntegerRecommendedCancellation P7 omission0::99
cog_207cIntegerRecommendedCancellation P7 comission0::99
cog_208aIntegerRecommendedCancellation P8 correct0::99
cog_208bIntegerRecommendedCancellation P8 omission0::99
cog_208cIntegerRecommendedCancellation P8 comission0::99
cog_209aIntegerRecommendedCancellation P9 correct0::99
cog_209bIntegerRecommendedCancellation P9 omission0::99
cog_209cIntegerRecommendedCancellation P9 comission0::99
cog_210aIntegerRecommendedCancellation P10 correct0::99
cog_210bIntegerRecommendedCancellation P10 omission0::99
cog_210cIntegerRecommendedCancellation P10 comission0::99
cog_211aIntegerRecommendedCancellation total correct0::999acorde
cog_211bIntegerRecommendedCancellation total omissions0::999aerrom
cog_211cIntegerRecommendedCancellation total comissions0::999aerrcm
daysrzIntegerRecommendeddays since randomizationstudyday, visitdt
d_sit5IntegerRecommendedSituation-Did not begin at top0;11=Describes test/occurred; 0=Does not describe test/didn't occur
d_sit6IntegerRecommendedSituation-Did not cancel left - right0;11=Describes test/occurred; 0=Does not describe test/didn't occur
d_sit7IntegerRecommendedSituation-Drew one line through0;11=Describes test/occurred; 0=Does not describe test/didn't occur
d_sit8IntegerRecommendedSituation-Unable to draw or use0;11=Describes test/occurred; 0=Does not describe test/didn't occur
alltest_sit1IntegerRecommendedSituation-Did not comprehend instr.0;11=Describes test/occurred; 0=Does not describe test/didn't occurd_sit1
alltest_sit2IntegerRecommendedSituation-Completely distracted0;11=Describes test/occurred; 0=Does not describe test/didn't occurd_sit2
alltest_sit3IntegerRecommendedSituation-Refused to comply0;11=Describes test/occurred; 0=Does not describe test/didn't occurd_sit3
alltest_sit4IntegerRecommendedSituation-Tantrum0;11=Describes test/occurred; 0=Does not describe test/didn't occurd_sit4
alltest_sit6IntegerRecommendedSituation-Other0;11=Describes test/occurred; 0=Does not describe test/didn't occurd_sit9
alltest_taskIntegerRecommendedCompleted Task1::31 = Yes; 2 = No; 3 = Uncertaind_task
alltest_versIntegerRecommendedPage Version used1::31 = Standard; 2 = Single Page 3 = Velcro Boardd_vers
alltest_qualitIntegerRecommendedQuality of test results1::31 = Usable; 2 = Partly Usable; 3 = Unusabled_qualit
b_masterIntegerRecommendedMastery of Test1;21=Yes, 2=Nod_master
b_usableIntegerRecommendedTask Usable1;21=Yes, 2=Nod_usable
ci_enrolledIntegerRecommendedParticipant enrolled0;10=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:

  • 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: cogass01 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.