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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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COMPASS Rating Scale Form



Parent/Teacher/Student Session Rating Scale and Teacher Engagement Rating Scale

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_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.
interview_dateDateRequiredDate on which the interview/genetic test/sampling/imaging/biospecimen was completed. MM/DD/YYYYRequired field
genderString20RequiredSex of the subjectM;FM = Male; F = Female
version_formString100RequiredForm used/assessment name
gas_timeIntegerRecommendedTime point of completion1::6; 888; 9991 = Time 1; 2 = coaching 1; 3 = coaching 2; 4 = coaching 3; 5 = coaching 4; 6 = Time 2; 888 = not applicable; 999 = missingpsrs_time, ssrs_time, ters_time, tsrs_time
psrs_1FloatRecommendedP/T: Relationship / S: Listening888 = Not applicable; 999 = missingssrs_1, tsrs_1
psrs_2FloatRecommendedP/T: Goals and Topics / S: How important888 = Not applicable; 999 = missingssrs_2, tsrs_2
psrs_3FloatRecommendedP/T: Approach or method / S: What we did888 = Not applicable; 999 = missingssrs_3, tsrs_3
psrs_4FloatRecommendedOverall888 = Not applicable; 999 = missingssrs_4, tsrs_4
tersaffectFloatRecommendedTeacher Engagement Rating Scale Level of Affect1::3; 888; 9991 = facial expression shows no emotion during student's activities; 1.5 = limited emotion is shown; very little praise; 2 = attentive and expressive at times; some praise/feedback; 2.5 = frequently attentive and expressive and frequently praising; 3 = positive praise/feedback and or instruction...; 888 = not applicable; 999 = missing
tersinteractFloatRecommendedTeacher Engagement Rating Scale Maintenance of Interaction1::3; 888; 9991 = does not attempt to initiate productivity; 1.5 = makes limited attempt to foster productivity; 2 = makes some attempts to maintain productivity; 2.5 =makes frequent attempts to maintain productivity; 3 = helps student maintain productivity throughout activity; 888 = not applicable; 999 = missing
tersdirectFloatRecommendedTeacher Engagement Rating Scale Directiveness1::3; 888; 9991 = repeatedly and intensely attempts to direct; 1.5 = frequently attempts to direct; 2 = makes some attempts to direct; 2.5 = makes some attempts to direct; 3 = tailors directiveness based on student's behavior throughout; 888 = not applicable; 999 = missing
tersresponsiveFloatRecommendedTeacher Engagement Rating Scale Responsiveness1::3; 888; 9991 = does not respond to student; 1.5 = shows limited and inconsistent responses; 2 = is somewhat responsive to student; 2.5 = frequently and positively responds; 3 = responds consistently and positively; 888 = not applicable; 999 = missing
tersinitiateFloatRecommendedTeacher Engagement Rating Scale Initiation1::3; 888; 9991 = apathetic and does not attempt to direct; 1.5 = passive but makes limited attempts to initiate; 2 = initiates some of the time w/ child; 2.5 = initiates positively w/ the child frequently; 3 = initiates positively w/ the child throughout; 888 = not applicable; 999 = missing
tersmoveFloatRecommendedTeacher Engagement Rating Scale Level of Movement/Participation1::3; 888; 9991 = does not move w/ child; 1.5 = makes limited movements w/ the child....; 2 = somewhat moves with the child; 2.5 = frequently moves w/ child; 3 = moves with child throughout; 888 = not applicable; 999 = missing
terstotalFloatRecommendedTERS Total888 = not applicable; 999 = missing
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: comprsf01 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.