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Frequently Asked Questions


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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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Diagnosis, Treatment, and Medication History



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/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
anornervIntegerRecommendedanorexia nervosa0;1;-70=No; 1=Yes; -7=Refused
edanoageIntegerRecommendedAge at onset of Anorexia Nervosa99 = Unknown
ano_durationString10RecommendedAnorexia Nervosa: total duration
dtmh04IntegerRecommendedSecondary Diagnosis1::71= Major Depressive Disorder; 2= Depressive NOS; 3= Obsessive-compulsive; 4= Attention Deficit Disorder; 5= Generalized Anxiety; 6= Dysthymia; 7= Other
dtmh05IntegerRecommendedStart age of secondary diagnosis
dtmh06IntegerRecommendedDuration in months of secondary diagnosis
dtmh07IntegerRecommendedTertiary Diagnosis1::71= Major Depressive Disorder; 2= Depressive NOS; 3= Obsessive-compulsive; 4= Attention Deficit Disorder; 5= Generalized Anxiety; 6= Dysthymia; 7= Other
dtmh08IntegerRecommendedStart age of tertiary diagnosis
dtmh09IntegerRecommendedDuration in months of tertiary diagnosis
dtmh10IntegerRecommendedSuicide attempt in past year?0;10= No; 1= Yes
dtmh11IntegerRecommendedPrevious outpatient therapy?0;10= No; 1= Yes
dtmh11aIntegerRecommendedPrevious outpatient therapy participants1;21= Individual; 2= Family
dtmh11bIntegerRecommendedPrevious outpatient therapy type1;2;31= Supportive; 2= Cognitive; 3= Behavioral
dtmh11cString100RecommendedPrevious outpatient therapy dates and duration
dtmh11dIntegerRecommendedPrevious outpatient therapy frequencyNumber of sessions per month
dtmh11eString100RecommendedPrevious outpatient theapy reason
dtmh12aIntegerRecommendedPrevious outpatient therapy participants (therapy 2)1;21= Individual; 2= Family
dtmh12bIntegerRecommendedPrevious outpatient therapy type (therapy 2)1;2;31= Supportive; 2= Cognitive; 3= Behavioral
dtmh12cString100RecommendedPrevious outpatient therapy dates and duration (therapy 2)
dtmh12dIntegerRecommendedPrevious outpatient therapy frequency (therapy 2)Number of sessions per month
dtmh12eString100RecommendedPrevious outpatient theapy reason (therapy 2)
dtmh13aIntegerRecommendedPrevious outpatient therapy participants (therapy 3)1;21= Individual; 2= Family
dtmh13bIntegerRecommendedPrevious outpatient therapy type (therapy 3)1;2;31= Supportive; 2= Cognitive; 3= Behavioral
dtmh13cString100RecommendedPrevious outpatient therapy dates and duration (therapy 3)
dtmh13dIntegerRecommendedPrevious outpatient therapy frequency (therapy 3)Number of sessions per month
dtmh13eString100RecommendedPrevious outpatient theapy reason (therapy 3)
dtmh14IntegerRecommendedPrevious partial/day program?0;10= No; 1= Yes
dtmh14aIntegerRecommendedPrevious partial/day program type1;2;31= Supportive; 2= Cognitive; 3= Behavioral
dtmh14bString100RecommendedPrevious partial/day program type dates and duration
dtmh14cIntegerRecommendedPrevious partial/day program frequencyNumber of sessions per month
dtmh14dString100RecommendedPrevious partial/day program reason
dtmh15IntegerRecommendedPrevious residential treatment?0;10= No; 1= Yes
dtmh15aIntegerRecommendedPrevious residential treatment type1;2;31= ED Related; 2= Psychiatric/non-ED related; 3= Medical non-ED related
dtmh15bIntegerRecommendedPrevious residential treatment number of admissions
dtmh15cString100RecommendedPrevious residential treatment duration of each admission
dtmh16IntegerRecommendedPrevious inpatient treatment0;10= No; 1= Yes
dtmh16aIntegerRecommendedPrevious inpatient treatment type1;2;31= ED Related; 2= Psychiatric/non-ED related; 3= Medical non-ED related
dtmh16bIntegerRecommendedPrevious inpatient treatment number of admissions
dtmh16cString100RecommendedPrevious inpatient treatment duration of each admission
dtmh17IntegerRecommendedPrevious other treatment?0;10= No; 1= Yes
chf_05String250RecommendedType of other treatment
dtmh17aString100RecommendedPrevious other treatment type
dtmh17bString100RecommendedPrevious other treatment duration
dtmh17cIntegerRecommendedPrevious other treatment frequencyNumber of sessions per month
dtmh17dString100RecommendedPrevious other treatment reason
medication1_nameString500RecommendedName first medication that the participant has taken0 = No medication; 999= Legitimately skipped
medication2_nameString200RecommendedName second medication that the participant has taken0 = No medication; 999= Legitimately skipped
medication3_nameString150RecommendedName third medication that the participant has taken0 = No medication; 999= Legitimately skipped
past_meds1String100RecommendedName first previous medication participant has taken including: name of medication, dosage, start and duration
past_meds2String100RecommendedName second previous medication participant has taken including: name of medication, dosage, start and duration
past_meds3String100RecommendedName third previous medication participant has taken including: name of medication, dosage, start and duration
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: dtmh01 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.