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Filter Cart

Viewable at the top right of NDA pages, the Filter Cart is a temporary holder for filters and data they select. Filters are added to the Workspace first, before being submitted to The Filter Cart. Data selected by filters in the Filter Cart can be added to a Data Package or an NDA Study from the Data Packaging Page, by clicking the 'Create Data Package / Add Data to Study' button.

The filter cart supports combining multiple filters together, and depending on filter type will use "AND" or "OR"  when combining filters.

Multiple selections from the same filter type will result in those selections being applied with an ‘OR’ condition. For example, if you add an NDA Collection Filter with selections for both collections 2112 and 2563 to an empty Workspace, the subjects from NDA Collection 2112 ‘OR’ NDA Collection 2563 will be added to your Workspace even if a subject is in both NDA Collections. You can then add other NDA Collections to your Workspace which further extends the ‘OR’ condition.

If a different filter type is added to your Workspace, or a filter has already been submitted to the Filter Cart, the operation then performs a logical ‘AND’ operation. This means that given the subjects returned from the first filter, only those subjects that matched the first filter are returned by the second filter (i.e., subjects that satisfied both filters). Note that only the subjects specific to your filter will be added to your Filter Cart and only on data shared with the research community. Other data for those same subjects may exist (i.e., within another NDA Collection, associated with a data structure that was not requested in the query, etc.). So, users should select ‘Find all Subjects Data’ to identify all data for those specific subjects. 

Additional Tips:

  • You may query the data without an account, but to gain access you will need to create an NDA user account and apply for access.  Most data access requires that you or your lab are sponsored by an NIH recognized institution with Federal Wide Assurance (FWA).  Without access, you will not be able to obtain individual-level data. 

    Once you have selected data of interest you can:
  • Create a data package - This allows you to specify format for access/download
  • Assign to Study Cohort - Associate the data to an NDA Study allowing for a DOI to be generated and the data to be linked directly to a finding, publication, or data release. 
  • Find All Subject Data - Depending on filter types being used, not all data associated with a subject will be selected.  Data may be restricted by data structure, NDA Collection, or outcome variables (e.g., NDA Study). ‘Find All Data’ expands the fliter criteria by replacing all filters in your Filter Cart with a single Query by GUID filter for all subjects selected by those filters.

    Please Note:
  • When running a query, it may take a moment to populate the Filter Cart. Queries happen in the background so you can define other queries during this time. 
  • When you add your first filter, all data associated with your query will be added to the Filter Cart (e.g., a Concept, an NDA Collection, a Data Structure/Element, etc.). As you add additional filters, they will also display in the Filter Cart. Only the name of filter will be shown in the Filter Cart, not the underlying structures. 
  • Information about the contents of the Filter Cart can be seen by clicking "Edit”.
  • Once your results appear in the Filter Cart, you can create a data package or assign subjects to a study by selecting the 'Package/Assign to Study' option. You can also 'Edit' or 'Clear' filters.

Frequently Asked Questions

  • The Filter Cart currently employs basic AND/OR Boolean logic. A single filter may contain multiple selections for that filter type, e.g., a single NDA Study filter might contain NDA Study 1 and NDA Study 2. A subject that is in EITHER 1 OR 2 will be returned.  Adding multiple filters to the cart, regardless of type, will AND the result of each filter.  If NDA Study 1 and NDA Study 2 are added as individual filters, data for a subject will only be selected if the subject is included in  BOTH 1 AND 2.

  • Viewable at the top right of NDA pages, the Filter Cart is a temporary holder of data identified by the user, through querying or browsing, as being of some potential interest. The Filter Cart is where you send the data from your Workspace after it has been filtered.

  • After filters are added to the Filter Cart, users have options to ‘Create a Package’ for download, ‘Associate to Study Cohort’, or ‘Find All Subject Data’. Selecting ‘Find All Subject Data’ identifies and pulls all data for the subjects into the Filter Cart. Choosing ‘Create a Package’ allows users to package and name their query information for download. Choosing ‘Associate to Study Cohort’ gives users the opportunity to choose the Study Cohort they wish to associate this data.


  • Once your filter cart contains the subjects of interest, select Create Data Package/Assign to Data Study which will provide options for accessing item level data and/or assigning to a study.  

  • Once queries have been added to your workspace, the next step is to Submit the Filters in the workspace to the Filter Cart.  This process runs the queries selected, saving the results within a filter cart attached to your account.  

  • The Workspace within the General Query Tool is a holding area where you can review your pending filters prior to adding them to Filter Cart. Therefore, the first step in accessing data is to select one or more items and move it into the Workspace. 


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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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Clinical Anxiety Scale

1,006 Shared Subjects

Clinical Assessments
View Change History
Query Element Name Data Type Size Required Description Value Range Notes Aliases
subjectkey GUID Required The NDAR Global Unique Identifier (GUID) for research subject NDAR*
src_subject_id String 20 Required Subject ID how it's defined in lab/project
interview_date Date Required Date on which the interview/genetic test/sampling/imaging/biospecimen was completed. MM/DD/YYYY Required field date_cas
interview_age Integer Required Age in months at the time of the interview/test/sampling/imaging. 0 :: 1260 Age 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.
sex String 20 Required Sex of the subject M;F; O; NR M = Male; F = Female; O=Other; NR = Not reported gender
Query cas_1 Integer Recommended Psychic Tension (care should be taken to distinguish tension from muscular tension -- see next item) 0::4 4 = Very marked and distressing feeling of being on edge 'keyed up', 'wound up' or 'nervous' which persists with little change throughout the waking hours. ;3 = As above, but with some fluctuation of severity during the course of the day. ;2 = A definite experience of being tense which is sufficient to cause some, although not severe, distress. ;1 = A slight feeling of being tense which does not cause distress. 0 = No feeling of being tense apart from the normal degree of tension experienced in response to stress and which is acceptable as normal for the population.
Query cas_2 Integer Recommended Ability to Relax (muscular tension) 0::4 4 = The experience of severe tension throughout much of the bodily musculature which may be accompanied by such symptoms as pain, stiffness, spasmodic contractions, and lack of control over movements. The experience is present throughout most of the waking day and there is no ability to produce relaxation at will. ;3 = As above, but the muscular tension may only be experienced in certain groups of muscles and may fluctuate in severity throughout the day. ;2 = A definite experience of muscular tension in some part of the musculature sufficient to cause some, but not severe, distress. ;1 = Slight recurrent muscular tension of which the patient is aware but which does not cause distress. Very mild degrees of tension headache or pain in other groups of muscles should be scored here. ;0 = No subjective muscular tension or of such degree which, when it occurs, can easily be controlled at will.
Query cas_3 Integer Recommended Startle Response (hyperarousability) 0::4 4 = Unexpected noise causes severe distress so that the patient may complain in some such phrase as "I jump out of my skin". Distress is experienced is psychic and somatic modalities so that, in addition to the experience of fright, there is muscular activity and autonomic symptoms such as sweating or palpitation. ;3 = Unexpected noise causes severe distress in psychic or somatic, but not in both modalities. ;2 = Unexpected noise causes definite but not severe distress. 1 = The patient agrees that he is slightly 'jumpy' but is not distressed by this. ;0 = The degree of startle response is entirely acceptable as normal for the population.
Query cas_4 Integer Recommended Worrying (The assessment must take into account the degree to which worry is out of proportion to actual stress) 0::4 4 = The patient experiences almost continuous preoccupation with painful thoughts which cannot be stopped voluntarily and the distress is quite out of proportion to the subject matter of the thoughts. ;3 = As above, but there is some fluctuation in intensity throughout the waking hours and the distressing thoughts may cease for an hour or two, especially if the patient is distracted by activity requiring his attention. ;2 = Painful thoughts out of proportion to the patient's situation keep intruding into consciousness but he is able to dispel or dismiss them. ;1 = The patient agrees that he tends to worry a little more than necessary about minor matters ;0 = The tendency to worry is accepted as being normal for the population ; for instance even marked worrying over a severe financial crisis or unexpected illness in a relative should be scored as 0 if it is judged to be entirely in keeping with the degree of stress.
Query cas_5 Integer Recommended Apprehension 0::4 4 = The experience is that of being on the brink of some disaster which cannot be explained. The experience need not be continuous and may occur in short bursts several times a day.; 3 = As above, but the experience does not occur more than once a day.; 2 = A sensation of groundless apprehension of disaster which is not severe although it causes definite distress. The patient may not use strong terms such as "disaster" or "catastrophe" but may express his experience in some such phrase as "I feel as if something bad is about to happen".; 1 = A slight degree of apprehensiveness of which the patient is aware but which does not cause distress.; 0 = No experience of groundless anticipation of disaster.
Query cas_6 Integer Recommended Restlessness 0::4 4 = The patient is unable to keep still for more than a few minutes and engages in restless pacing or other purposeless activity. ;3 = As above, but he is able to keep still for an hour or so at time. ;2 = There is a feeling of "needing to be on the move" which causes some, but not severe, distress. ;1 = Slight experience of restlessness which causes no distress. 0 = Absence of restlessness.
Query cas_total Integer Recommended Clinical Anxiety Scale Total
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.