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Frequently Asked Questions


NDA Help Center

Filter Cart

The Filter Cart provides a way to query and access data for which you may be interested.  There are multiple places to go query and Add to Filter Cart (Sometimes called Download).  

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 add subjects, sometimes it may take a few minutes to populate.  You can continue to do other things 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 available for the subjects selected 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 available.  However, if you want to see all of the clinical and phenotype, then select, "Find All Subject Data" to see all the data avaialble for those subjects.  

when a secord or third filter is applied, an AND condition is used to determine the subjects that are exist in all filters.  If the subject does not appear in any filter, that subjects data will be excluded from your filter cart. Given the sparcity of data in the NDA, it is possible for no subjects to appear across filters.  If that happens, clear your filter cart, and start over.  

The NDA is looking to enhance query/filtering.  Until additional tools become available, it is best to package more data than you need and then package and download the data and use other tools to further restrict and analyze the data.  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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Expressive One-Word Picture Vocabulary Test (2000)



Expressive One-Word Picture Vocabulary Test (EOWPVT), 2000 Edition as defined by the University of Illinois at Chicago

Download Definition as
Download Submission Template as
Element NameData TypeSizeRequiredDescriptionValue RangeNotesAliases
subjectkeyGUIDRequiredThe NDAR Global Unique Identifier (GUID) for research subjectNDAR*GUID, NDAR_GUID
src_subject_idString20RequiredSubject ID how it's defined in lab/projectSubject_ID
interview_dateDateRequiredDate on which the interview/genetic test/sampling/imaging/biospecimen was completed. MM/DD/YYYYRequired fieldEOWPVT_DOE
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.EOWPVT_CA_mths, INTERVIEW_AGE_MONTHS
genderString20RequiredSex of the subjectM;FM = Male; F = FemaleSEX
eowpvt_editionString20RecommendedEOWPVT Edition used4th edition was published in 2011eowpvt_measure, eowpvt_year
eowpvt_cmtString255RecommendedMiscellaneous comments regarding this protocolEOWPVT_COMMENT
eowpvt_ceiling_itemIntegerRecommendedEOWPVT Ceiling Item1 :: 190
eowpvt_number_of_errorsIntegerRecommendedEOWPVT Number of Errors0 :: 190
eowpvt_raw_scrIntegerRecommendedEOWPVT Raw Score0 :: 190EOWPVT_RAW
eowpvt_ssIntegerRecommendedEOWPVT Standard Score54 :: 146EOWPVT_STANDARD
eowpvt_percentIntegerRecommendedEOWPVT Percentile Rank1 :: 99
eowpvt_aeIntegerRecommendedEOWPVT Age Equivalent (in months)12 :: 231EOWPVT_AGE_EQUIV
eowpvt_1IntegerRecommendedapple0;10=No; 1=Yes
eowpvt_2IntegerRecommendedeye0;10=No; 1=Yes
eowpvt_3IntegerRecommendedtree0;10=No; 1=Yes
eowpvt_4IntegerRecommendedkitty0;10=No; 1=Yes
eowpvt_5IntegerRecommendedbook0;10=No; 1=Yes
eowpvt_6IntegerRecommendedtelephone0;10=No; 1=Yes
eowpvt_7IntegerRecommendedbike0;10=No; 1=Yes
eowpvt_8IntegerRecommendedmonkey0;10=No; 1=Yes
eowpvt_9IntegerRecommendedboat0;10=No; 1=Yes
eowpvt_10IntegerRecommendedbird0;10=No; 1=Yes
eowpvt_11IntegerRecommendedplane0;10=No; 1=Yes
eowpvt_12IntegerRecommendedbanana0;10=No; 1=Yes
eowpvt_13IntegerRecommendedelephant0;10=No; 1=Yes
eowpvt_14IntegerRecommendedscissors0;10=No; 1=Yes
eowpvt_15IntegerRecommendedswing0;10=No; 1=Yes
eowpvt_16IntegerRecommendedear0;10=No; 1=Yes
eowpvt_17IntegerRecommendedheart0;10=No; 1=Yes
eowpvt_18IntegerRecommendedduck0;10=No; 1=Yes
eowpvt_19IntegerRecommendedkey0;10=No; 1=Yes
eowpvt_20IntegerRecommendedswim0;10=No; 1=Yes
eowpvt_21IntegerRecommendedsofa0;10=No; 1=Yes
eowpvt_22IntegerRecommendedtruck0;10=No; 1=Yes
eowpvt_23IntegerRecommendedleaf0;10=No; 1=Yes
eowpvt_24IntegerRecommendedtrain0;10=No; 1=Yes
eowpvt_25IntegerRecommendedpillow0;10=No; 1=Yes
eowpvt_26IntegerRecommendedcoat0;10=No; 1=Yes
eowpvt_27IntegerRecommendedcup0;10=No; 1=Yes
eowpvt_28IntegerRecommendedhair0;10=No; 1=Yes
eowpvt_29IntegerRecommendedcloud0;10=No; 1=Yes
eowpvt_30IntegerRecommendedpenguin0;10=No; 1=Yes
eowpvt_31IntegerRecommendedbus0;10=No; 1=Yes
eowpvt_32IntegerRecommendedfoot0;10=No; 1=Yes
eowpvt_33IntegerRecommendedbee0;10=No; 1=Yes
eowpvt_34IntegerRecommendedcorn0;10=No; 1=Yes
eowpvt_35IntegerRecommendedbasket0;10=No; 1=Yes
eowpvt_36IntegerRecommendedfireman0;10=No; 1=Yes
eowpvt_37IntegerRecommendedanimal0;10=No; 1=Yes
eowpvt_38IntegerRecommendedpaint0;10=No; 1=Yes
eowpvt_39IntegerRecommendedrug0;10=No; 1=Yes
eowpvt_40IntegerRecommendedskateboard0;10=No; 1=Yes
eowpvt_41IntegerRecommendedclothes0;10=No; 1=Yes
eowpvt_42IntegerRecommendedtiger0;10=No; 1=Yes
eowpvt_43IntegerRecommendedbridge0;10=No; 1=Yes
eowpvt_44IntegerRecommendedfood0;10=No; 1=Yes
eowpvt_45IntegerRecommendedstarfish0;10=No; 1=Yes
eowpvt_46IntegerRecommendedbugs0;10=No; 1=Yes
eowpvt_47IntegerRecommendedsmoke0;10=No; 1=Yes
eowpvt_48IntegerRecommendedstraw0;10=No; 1=Yes
eowpvt_49IntegerRecommendedsuitcases0;10=No; 1=Yes
eowpvt_50IntegerRecommendedfruit0;10=No; 1=Yes
eowpvt_51IntegerRecommendedbones0;10=No; 1=Yes
eowpvt_52IntegerRecommendeddrink0;10=No; 1=Yes
eowpvt_53IntegerRecommendedgoat0;10=No; 1=Yes
eowpvt_54IntegerRecommendedwall0;10=No; 1=Yes
eowpvt_55IntegerRecommendedfootprint0;10=No; 1=Yes
eowpvt_56IntegerRecommendedtire0;10=No; 1=Yes
eowpvt_57IntegerRecommendedlight0;10=No; 1=Yes
eowpvt_58IntegerRecommendedpineapple0;10=No; 1=Yes
eowpvt_59IntegerRecommendedskeleton0;10=No; 1=Yes
eowpvt_60IntegerRecommendedantlers0;10=No; 1=Yes
eowpvt_61IntegerRecommendedinstruments0;10=No; 1=Yes
eowpvt_62IntegerRecommendedbottle0;10=No; 1=Yes
eowpvt_63IntegerRecommendeddentist0;10=No; 1=Yes
eowpvt_64IntegerRecommendedwaterfall0;10=No; 1=Yes
eowpvt_65IntegerRecommendedraccoon0;10=No; 1=Yes
eowpvt_66IntegerRecommendedcactus0;10=No; 1=Yes
eowpvt_67IntegerRecommendedtelescope0;10=No; 1=Yes
eowpvt_68IntegerRecommendedstatue0;10=No; 1=Yes
eowpvt_69IntegerRecommendedwrite0;10=No; 1=Yes
eowpvt_70IntegerRecommendedfurniture0;10=No; 1=Yes
eowpvt_71IntegerRecommendedcut0;10=No; 1=Yes
eowpvt_72IntegerRecommendedbinoculars0;10=No; 1=Yes
eowpvt_73IntegerRecommendedfireplace0;10=No; 1=Yes
eowpvt_74IntegerRecommendedsewing0;10=No; 1=Yes
eowpvt_75IntegerRecommendedwrench0;10=No; 1=Yes
eowpvt_76IntegerRecommendedrectangle0;10=No; 1=Yes
eowpvt_77IntegerRecommendedtime0;10=No; 1=Yes
eowpvt_78IntegerRecommendedleopard0;10=No; 1=Yes
eowpvt_79IntegerRecommendedmail0;10=No; 1=Yes
eowpvt_80IntegerRecommendedpyramid0;10=No; 1=Yes
eowpvt_81IntegerRecommendedshield0;10=No; 1=Yes
eowpvt_82IntegerRecommendedlobster0;10=No; 1=Yes
eowpvt_83IntegerRecommendedstool0;10=No; 1=Yes
eowpvt_84IntegerRecommendedcompass0;10=No; 1=Yes
eowpvt_85IntegerRecommendedtrumpet0;10=No; 1=Yes
eowpvt_86IntegerRecommendedpaw0;10=No; 1=Yes
eowpvt_87IntegerRecommendedbattery0;10=No; 1=Yes
eowpvt_88IntegerRecommendedostrich0;10=No; 1=Yes
eowpvt_89IntegerRecommendedchess0;10=No; 1=Yes
eowpvt_90IntegerRecommendedmicrophone0;10=No; 1=Yes
eowpvt_91IntegerRecommendedthermometer0;10=No; 1=Yes
eowpvt_92IntegerRecommendedpercent0;10=No; 1=Yes
eowpvt_93IntegerRecommendedskydive0;10=No; 1=Yes
eowpvt_94IntegerRecommendedstadium0;10=No; 1=Yes
eowpvt_95IntegerRecommendedmeasure0;10=No; 1=Yes
eowpvt_96IntegerRecommendedwindmill0;10=No; 1=Yes
eowpvt_97IntegerRecommendedwheelbarrow0;10=No; 1=Yes
eowpvt_98IntegerRecommendedsaddle0;10=No; 1=Yes
eowpvt_99IntegerRecommendedreptile0;10=No; 1=Yes
eowpvt_100IntegerRecommendedspring0;10=No; 1=Yes
eowpvt_101IntegerRecommendedtweezer0;10=No; 1=Yes
eowpvt_102IntegerRecommendedwater0;10=No; 1=Yes
eowpvt_103IntegerRecommendedbanjo0;10=No; 1=Yes
eowpvt_104IntegerRecommendedgraph0;10=No; 1=Yes
eowpvt_105IntegerRecommendedboomerang0;10=No; 1=Yes
eowpvt_106IntegerRecommendedtransportation0;10=No; 1=Yes
eowpvt_107IntegerRecommendedlaptop0;10=No; 1=Yes
eowpvt_108IntegerRecommendedcelery0;10=No; 1=Yes
eowpvt_109IntegerRecommendedstump0;10=No; 1=Yes
eowpvt_110IntegerRecommendedfraction0;10=No; 1=Yes
eowpvt_111IntegerRecommendeddirection0;10=No; 1=Yes
eowpvt_112IntegerRecommendeddock0;10=No; 1=Yes
eowpvt_113IntegerRecommendedmicroscope0;10=No; 1=Yes
eowpvt_114IntegerRecommendedgreenhouse0;10=No; 1=Yes
eowpvt_115IntegerRecommendedfeeling0;10=No; 1=Yes
eowpvt_116IntegerRecommendedhoof0;10=No; 1=Yes
eowpvt_117IntegerRecommendedscale0;10=No; 1=Yes
eowpvt_118IntegerRecommendedhammock0;10=No; 1=Yes
eowpvt_119IntegerRecommendedhexagon0;10=No; 1=Yes
eowpvt_120IntegerRecommendedclarinet0;10=No; 1=Yes
eowpvt_121IntegerRecommendedskyscraper0;10=No; 1=Yes
eowpvt_122IntegerRecommendedfungus0;10=No; 1=Yes
eowpvt_123IntegerRecommendedbulldozer0;10=No; 1=Yes
eowpvt_124IntegerRecommendedscroll0;10=No; 1=Yes
eowpvt_125IntegerRecommendedsymbols0;10=No; 1=Yes
eowpvt_126IntegerRecommendedAfrica0;10=No; 1=Yes
eowpvt_127IntegerRecommendedfunnel0;10=No; 1=Yes
eowpvt_128IntegerRecommendedstethoscope0;10=No; 1=Yes
eowpvt_129IntegerRecommendedasparagus0;10=No; 1=Yes
eowpvt_130IntegerRecommendedappliance0;10=No; 1=Yes
eowpvt_131IntegerRecommendedcolumn0;10=No; 1=Yes
eowpvt_132IntegerRecommendedeclips0;10=No; 1=Yes
eowpvt_133IntegerRecommendedthermostat0;10=No; 1=Yes
eowpvt_134IntegerRecommendedawning0;10=No; 1=Yes
eowpvt_135IntegerRecommendedtripod0;10=No; 1=Yes
eowpvt_136IntegerRecommendedstirrup0;10=No; 1=Yes
eowpvt_137IntegerRecommendedkayak0;10=No; 1=Yes
eowpvt_138IntegerRecommendedhourgrass0;10=No; 1=Yes
eowpvt_139IntegerRecommendedreel0;10=No; 1=Yes
eowpvt_140IntegerRecommendedsqueegee0;10=No; 1=Yes
eowpvt_141IntegerRecommendedberet0;10=No; 1=Yes
eowpvt_142IntegerRecommendedsphinx0;10=No; 1=Yes
eowpvt_143IntegerRecommendedpoultry0;10=No; 1=Yes
eowpvt_144IntegerRecommendedprescription0;10=No; 1=Yes
eowpvt_145IntegerRecommendedgear0;10=No; 1=Yes
eowpvt_146IntegerRecommendedhurdle0;10=No; 1=Yes
eowpvt_147IntegerRecommendedcandelabra0;10=No; 1=Yes
eowpvt_148IntegerRecommendedtine0;10=No; 1=Yes
eowpvt_149IntegerRecommendedorigami0;10=No; 1=Yes
eowpvt_150IntegerRecommendedanvil0;10=No; 1=Yes
eowpvt_151IntegerRecommendedsurvey0;10=No; 1=Yes
eowpvt_152IntegerRecommendedsilhouette0;10=No; 1=Yes
eowpvt_153IntegerRecommendedclamp0;10=No; 1=Yes
eowpvt_154IntegerRecommendedhieroglyphic0;10=No; 1=Yes
eowpvt_155IntegerRecommendedobservatory0;10=No; 1=Yes
eowpvt_156IntegerRecommendedprotractor0;10=No; 1=Yes
eowpvt_157IntegerRecommendedpommel0;10=No; 1=Yes
eowpvt_158IntegerRecommendedpercussion0;10=No; 1=Yes
eowpvt_159IntegerRecommendedcabana0;10=No; 1=Yes
eowpvt_160IntegerRecommendedabacus0;10=No; 1=Yes
eowpvt_161IntegerRecommendedflotilla0;10=No; 1=Yes
eowpvt_162IntegerRecommendedsickle0;10=No; 1=Yes
eowpvt_163IntegerRecommendedfilament0;10=No; 1=Yes
eowpvt_164IntegerRecommendedbeaker0;10=No; 1=Yes
eowpvt_165IntegerRecommendedgauge0;10=No; 1=Yes
eowpvt_166IntegerRecommendedotter0;10=No; 1=Yes
eowpvt_167IntegerRecommendedtrowel0;10=No; 1=Yes
eowpvt_168IntegerRecommendedgalaxy0;10=No; 1=Yes
eowpvt_169IntegerRecommendedparallelogram0;10=No; 1=Yes
eowpvt_170IntegerRecommendedyoke0;10=No; 1=Yes
eowpvt_171IntegerRecommendedlouver0;10=No; 1=Yes
eowpvt_172IntegerRecommendedmetronome0;10=No; 1=Yes
eowpvt_173IntegerRecommendedcaster0;10=No; 1=Yes
eowpvt_174IntegerRecommendedaviary0;10=No; 1=Yes
eowpvt_175IntegerRecommendedclef0;10=No; 1=Yes
eowpvt_176IntegerRecommendedthistle0;10=No; 1=Yes
eowpvt_177IntegerRecommendedisthmus0;10=No; 1=Yes
eowpvt_178IntegerRecommendedinvertebrate0;10=No; 1=Yes
eowpvt_179IntegerRecommendedmonocular0;10=No; 1=Yes
eowpvt_180IntegerRecommendedsextant0;10=No; 1=Yes
eowpvt_181IntegerRecommendedshard0;10=No; 1=Yes
eowpvt_182IntegerRecommendedoutrigger0;10=No; 1=Yes
eowpvt_183IntegerRecommendedscarab0;10=No; 1=Yes
eowpvt_184IntegerRecommendedtangent0;10=No; 1=Yes
eowpvt_185IntegerRecommendedcorona0;10=No; 1=Yes
eowpvt_186IntegerRecommendedserif0;10=No; 1=Yes
eowpvt_187IntegerRecommendeddais0;10=No; 1=Yes
eowpvt_188IntegerRecommendedapogee0;10=No; 1=Yes
eowpvt_189IntegerRecommendeddolmen0;10=No; 1=Yes
eowpvt_190IntegerRecommendedplinth0;10=No; 1=Yes
eowpvt_tot2IntegerRecommendedTotal 2
eowpvt_tot3IntegerRecommendedTotal 3
eowpvt_tot4IntegerRecommendedTotal 4
eowpvt_tot5IntegerRecommendedTotal 5
eowpvt_tot6IntegerRecommendedTotal 6
eowpvt_tot7IntegerRecommendedTotal 7
eowpvt_tot8IntegerRecommendedTotal 8
eowpvt_tot9IntegerRecommendedTotal 9
eowpvt_tot10IntegerRecommendedTotal 10
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: eowpvt02 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.