NDA Help Center

Login Dialog

Frequently Asked Questions


NDA Help Center

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



Reset Password

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.

Warning Notice

This is a U.S. Government computer system, which may be accessed and used only for authorized Government business by authorized personnel. Unauthorized access or use of this computer system may subject violators to criminal, civil, and/or administrative action. All information on this computer system may be intercepted, recorded, read, copied, and disclosed by and to authorized personnel for official purposes, including criminal investigations. Such information includes sensitive data encrypted to comply with confidentiality and privacy requirements. Access or use of this computer system by any person, whether authorized or unauthorized, constitutes consent to these terms. There is no right of privacy in this system.

Update Password

You have logged in with a temporary password. Please update your password. Passwords must contain 8 or more characters and must contain at least 3 of the following types of characters:

  • Uppercase
  • Lowercase
  • Numbers
  • Special Characters limited to: %,_,!,@,#,$,-,%,&,+,=,),(,*,^,:,;

Subscribe to our mailing list

Mailing List(s)
Email Format

You are now leaving the NIMH Data Archive (NDA) web site to go to:

Click on the address above if the page does not change within 10 seconds.


NDA is not responsible for the content of this external site and does not monitor other web sites for accuracy.

Accept Terms
Filter Cart
No filters selected
Value Range
Data Structures with shared data
No filters have been selected
Switch User

Child and Adolescent Trauma Screen



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
comqotherString255RecommendedRespondent - Other (text)
thq6IntegerRecommended6. Have you ever experienced a natural disaster such as a tornado, hurricane, flood or major earthquake, etc., where you felt you or your loved ones were in danger of death or injury?0;10 = No ; 1 = Yescats1
cats2IntegerRecommendedSerious accident or injury like a car/bike crash, dog bite, sports injury.0;10 = No; 1 = Yes
cats3IntegerRecommendedRobbed by threat, force or weapon.0;10 = No; 1 = Yes
cats4IntegerRecommendedSlapped, punched, or beat up in your/the family.0;10 = No; 1 = Yes
cats5IntegerRecommendedSlapped, punched, or beat up by someone not in your/the family.0;10 = No; 1 = Yes
cats6IntegerRecommendedSeeing someone in your family get slapped, punched or beat up.0;10 = No; 1 = Yes
cats7IntegerRecommendedSeeing someone in the community get slapped, punched or beat up.0;10 = No; 1 = Yes
cats8IntegerRecommendedSomeone older touching your(or his/her) private parts when they shouldn't.0;10 = No; 1 = Yes
cats9IntegerRecommendedSomeone forcing or pressuring sex, or when you (or he/she) couldn't say no.0;10 = No; 1 = Yes
lscr17IntegerRecommendedHas someone close to you died suddenly or unexpectedly (for example, sudden heart attack, murder or suicide)?0; 10=No; 1=Yescats10
cats11IntegerRecommendedAttacked, stabbed, shot at or hurt badly.0;10 = No; 1 = Yes
t_ptsd_3IntegerRecommendedHas anything awful ever happened to you/she, like:-Seeing someone being killed or badly hurt?0;1No = 0; Yes = 1cats12
cats13IntegerRecommendedStressful or scary medical procedure.0;10 = No; 1 = Yes
ucla_ptsd4IntegerRecommendedBeing in a place where war was going on around you0;10=Did not happen to subject; 1=Happened to subjectcats14
cats15IntegerRecommendedOther stressful or scary event?0;10 = No; 1 = Yes
cats15_descString100RecommendedOther stressful or scary event? Describe
cats16String100RecommendedWhich stressful or scary event is bothering you/the child most now?
cats_freq1IntegerRecommendedCaregiver: Upsetting thoughts or images about a stressful event. Or re-enacting a stressful event in play. / Youth: Upsetting thoughts or pictures about what happened that pop into your head.0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq2IntegerRecommendedCaregiver: Bad dreams related to a stressful event. / Youth: Bad dreams reminding you of what happened.0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq3IntegerRecommendedCaregiver: Acting, playing or feeling as if a stressful event is happening right now. / Youth: Feeling as if what happened is happening all over again.0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq4IntegerRecommendedCaregiver: Feeling very emotionally upset when reminded of a stressful event. / Youth: Feeling very upset when you are reminded of what happened.0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq5IntegerRecommendedCaregiver: Strong physical reactions when reminded of a stressful event (sweating, heart beating fast). / Youth: Strong feelings in your body when you are reminded of what happened (sweating, heart beating fast, upset stomach).0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq6IntegerRecommendedCaregiver: Trying not to remember, talk about or have feelings about a stressful event. / Youth: Trying not to think about or talk about what happened. Or to not have feelings about it.0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq7IntegerRecommendedCaregiver: Avoiding activities, people, places or things that are reminders of a stressful event. / Youth: Staying away from people, places, things, or situations that remind you of what happened.0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq8IntegerRecommendedCaregiver: Not being able to remember an important part of a stressful event. / Youth: Not being able to remember part of what happened.0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq9IntegerRecommendedCaregiver: Negative changes in how s/he thinks about self, others or the world after a stressful event. / Youth: Negative thoughts about yourself or others. Thoughts like I won't have a good life, no one can be trusted, the whole world is unsafe.0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq10IntegerRecommendedCaregiver: Thinking a stressful event happened because s/he or someone else did something wrong or did not do enough to stop it. / Youth: Blaming yourself for what happened, or blaming someone else when it isn't their fault.0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq11IntegerRecommendedCaregiver: Having very negative emotional states (afraid, angry, guilty,ashamed). / Youth: Bad feelings (afraid, angry, guilty, ashamed) a lot of the time.0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq12IntegerRecommendedCaregiver: Losing interest in activities s/he enjoyed before a stressful event. Including not playing as much. / Youth: Not wanting to do things you used to do.0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq13IntegerRecommendedCaregiver: Feeling distant or cut off from people around her/him. / Youth: Not feeling close to people.0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq14IntegerRecommendedCaregiver: Not showing or reduced positive feelings (being happy, having loving feelings). / Youth: Not being able to have good or happy feelings.0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq15IntegerRecommendedCaregiver: Being irritable. Or having angry outbursts without a good reason and taking it out / Youth: Feeling mad. Having fits of anger and taking it out on others.0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq16IntegerRecommendedCaregiver: Risky behavior or behavior that could be harmful. / Youth: Doing unsafe things.0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq17IntegerRecommendedCaregiver: Being overly alert or on guard. / Youth: Being overly careful or on guard (checking to see who is around you).0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq18IntegerRecommendedCaregiver: Being jumpy or easily startled. / Youth: Being jumpy.0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq19IntegerRecommendedCaregiver: Problems with concentration. / Youth: Problems paying attention.0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_freq20IntegerRecommendedCaregiver: Trouble falling or staying asleep. / Youth: Trouble falling or staying asleep.0::30 = Never; 1 = Once in a while; 2 = Half the time; 3 = Almost always
cats_summary1IntegerRecommendedCATS Total Score
cats_summary2IntegerRecommendedCATS Score Category1::31 = Score below 15 (Normal. Not clinically elevated); 2 = Score from 15 to 20 (Moderate trauma-related distress); 3 = Score from 21 upward (Probable PTSD)
cats_summary3IntegerRecommendedTrauma-related problems interfered with: Getting along with others0;10 = No; 1 = Yes
cats_summary4IntegerRecommendedTrauma-related problems interfered with: Hobbies/fun0;10 = No; 1 = Yes
cats_summary5IntegerRecommendedTrauma-related problems interfered with: School or work0;10 = No; 1 = Yes
cats_summary6IntegerRecommendedTrauma-related problems interfered with: Family relationships0;10 = No; 1 = Yes
cats_summary7IntegerRecommendedTrauma-related problems interfered with: General happiness0;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: cats_trauma01 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.