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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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Selected Filters
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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

Value Range
Data Structures with shared data
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PTSD Scale for DSM-5



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/projectrecord_id
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 was completed. MM/DD/YYYYRequired field
genderString20RequiredSex of the subjectM;FM = Male; F = Female
caps_1IntegerRecommendedIntrusive memories0;10 = No; 1 = Yes
yptb2yIntegerRecommendedPTSD. Recurrent distressing dreams of event0 :: 10 = Absent; 1 = Presentcaps_2
caps_3IntegerRecommendedDissociative reactions0;10 = No; 1 = Yes
yptb4yIntegerRecommendedPTSD. Intense psychological distress at cues0 :: 10 = Absent; 1 = Presentcaps_4
caps_5IntegerRecommendedCued physiological reactions0;10 = No; 1 = Yes
caps_6IntegerRecommendedAvoidance of memories, thoughts, feelings0;10 = No; 1 = Yes
caps_7IntegerRecommendedAvoidance of external reminders0;10 = No; 1 = Yes
caps_8IntegerRecommendedInability to recall important aspect of event0;10 = No; 1 = Yes
caps_9IntegerRecommendedExaggerated negative beliefs or expectations0;10 = No; 1 = Yes
caps_10IntegerRecommendedDistorted cognitions leading to blame0;10 = No; 1 = Yes
caps_11IntegerRecommendedPersistent negative emotional state0;10 = No; 1 = Yes
yptc4yIntegerRecommendedPTSD. Diminished interest in activities0 :: 10 = Absent; 1 = Presentcaps_12
caps_13IntegerRecommendedDetachment or estrangement from others0;10 = No; 1 = Yes
caps_14IntegerRecommendedPersistent inability to experience positive emotions0;10 = No; 1 = Yes
caps_15IntegerRecommendedIrritable behavior and angry outbursts0;10 = No; 1 = Yes
caps_16IntegerRecommendedReckless or self-destructive behavior0;10 = No; 1 = Yes
yptd4yIntegerRecommendedPTSD. Hypervigilance0 :: 10 = Absent; 1 = Presentcaps_17
yptd5yIntegerRecommendedPTSD. Exaggerated startle response0 :: 10 = Absent; 1 = Presentcaps_18
caps_19IntegerRecommendedProblems with concentration0;10 = No; 1 = Yes
caps_20IntegerRecommendedSleep disturbance0;10 = No; 1 = Yes
scid_ptsd_length_1IntegerRecommendedPTSD Duration Longer than 1 Month Current (Parent/Child/Clinician)0;1;-99;88;770= No; 1= Yes ; -99=N/A ; 88= Missing ; 77= Refusedcaps_21
caps_22IntegerRecommendedSubjective distress0;10 = No; 1 = Yes
caps_23IntegerRecommendedImpairment in social functioning0;10 = No; 1 = Yes
caps_24IntegerRecommendedImpairment in occupational functioning0;10 = No; 1 = Yes
caps_25IntegerRecommendedGlobal validity0;10 = No; 1 = Yes
caps_26IntegerRecommendedGlobal severity0;10 = No; 1 = Yes
caps_27IntegerRecommendedGlobal improvement0;10 = No; 1 = Yes
mini_ptsd1IntegerRecommendedPTSD: depersonalization0;10=No; 1=Yescaps_28
mini_ptsd2IntegerRecommendedPTSD: derealization0;10=No; 1=Yescaps_29
caps_30IntegerRecommendedPTSD PRESENT ALL CRITERIA (A-G) MET?0;10 = No; 1 = Yes
caps_31IntegerRecommendedPTSD PRESENT With dissociative symptoms0;10 = No; 1 = Yes
caps_32IntegerRecommendedPTSD PRESENT With delayed onset (> 6 months)0;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: ptsd_dsm501 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.