NDA Help Center

Login Dialog

Frequently Asked Questions


NDA Help Center

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. 


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

Change in Study Status

611 Shared Subjects

Clinical Assessments
Exit Form
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* guid
src_subject_id String 20 Required Subject ID how it's defined in lab/project pid
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.
interview_date Date Required Date on which the interview/genetic test/sampling/imaging/biospecimen was completed. MM/DD/YYYY Required field
sex String 20 Required Sex of the subject M;F; O; NR M = Male; F = Female; O=Other; NR = Not reported gender
Query phase_cts Integer Recommended Phase I (12-weeks) Phase II (6-months) 1;2 1 = Phase I - Participants were randomly assigned to receive sertraline (Zoloft), cognitive behavioral therapy, a combination of these treatments, or a placebo. 2 = Phase II - Maintenance period for participants who responded to any of the three active treatments. phase, phase_ct, phase_p
Query change_s Integer Recommended Type of study status change 1;2;3 1 = Study Dropout;2 = Treatment Dropout;3 = Pre-mature Termination change
stdate Date Recommended Study Treatment stop date daypmt, daytxdr
Query daydrop Integer Recommended Study Dropout - day of study drop
Query wkstdrop Integer Recommended Study week subject drops out of study 0::36 0 = prior to Week 1;1 = Week 1;36 = Week 36 wkpmt, wktxdrop
sd_othrs String 80 Recommended Study Dropout - description of other reason
erlrsmds String 255 Recommended Describe reason for early termination tx_othrs, whatothr_p
Query trminatn Integer Recommended Premature Termination - Nature of the premature termination 1;2 1 = Assigned study treatment discontinued all or in part;2 = Study treatment continued but out-of-protocol intervention added
Query whatfx String 60 Recommended Description of intolerable side-effects
Query daylasttx Integer Recommended Study day last regular treatment session was completed
Query daymstrecnt Integer Recommended Study day most recent scheduled assessment was completed
Query cssyorn Integer Recommended Was a change in study status assessment completed? 0;1 0 = No;1 = Yes
Query daycss Integer Recommended Study day change in study status form was completed
Query dayfinl Integer Recommended Study day final assessment was completed
Query asapform Integer Recommended Was an ASAP form completed? 0;1 0 = No;1 = Yes
Query dayasap_p Integer Recommended Study day ASAP initiated
Query asapanel Integer Recommended Presented to cross-site ASAP Panel? 0;1 0 = No;1 = Yes
Query daypanl Integer Recommended Study day of ASAP Panel
Query daychange Integer Recommended Study day of change in study status assessment
Query changewk Integer Recommended Study week of change in study status assessment
Query stdor1 Integer Recommended Dropout -subject moved and participation is no longer possible 0;1 1 = Yes; 0=No sd_moved
Query stdor2 Integer Recommended Dropout - lost to follow-up 1;0 1 = Yes; 0=No sd_lost
Query stdor3 Integer Recommended Dropout-consent withdrawn 1;0 1 = Yes; 0-No sd_wthdr
Query stdor5 Integer Recommended Dropout-adverse event 1;0 1 = Yes; 0=No sd_advev, tx_advev
Query stdor6 Integer Recommended Dropout-subject' death 1;0 1 = Yes; 0=No sd_died
Query stdor8 Integer Recommended Dropout-unknown reason 1;0 1 = Yes; 0=No sd_unkn, tx_unknw
Query stdor7 Integer Recommended Dropout-other reason 1;0 1 = Yes; 0=No sd_other, tx_other
Query tx_attnd Integer Recommended Unable to attend treatment sessions 0;1 0 = No;1 = Yes
Query tx_noint Integer Recommended No longer interested in participating 0;1 0 = No;1 = Yes
Query preg Integer Recommended patient become pregnant 0;1;-7 0=No; 1=Yes; -7=Refused TX_PREG
Query tx_cnsnt Integer Recommended Child/parent withdrew consent for treatment 0;1 0 = No;1 = Yes
Query tx_nocbt Integer Recommended Do not want to participate in CBT 0;1 0 = No;1 = Yes
Query tx_nopbo Integer Recommended Do not want to risk possibility of taking PLACEBO 0;1 0 = No;1 = Yes
Query tx_nomed Integer Recommended Do not want to risk possibility of taking meds 0;1 0 = No;1 = Yes
Query psycotic Integer Recommended Subject became psychotic 0;1 0 = No;1 = Yes
Query manic Integer Recommended Subject became manic 0;1 0 = No;1 = Yes
Query hypomanc Integer Recommended Subject became hypomanic 0;1 0 = No;1 = Yes
Query agitated Integer Recommended Subject displayed agitation/disinhibition 0;1 0 = No;1 = Yes
Query nosucont Integer Recommended Subject became suicidal 0;1 0 = No;1 = Yes
Query chrt_que2 Integer Recommended Patient made a suicide attempt 0;1 0=No; 1=Yes suiatmpt
Query chronill Integer Recommended Chronic medical illness 0;1 0 = No;1 = Yes illness
Query medintefere Integer Recommended Use of medications that interfere with study 0;1 0 = No;1 = Yes meds
Query subabuse Integer Recommended curr substance abuse or depend 0;1;-7 0=No; 1=Yes; -7=Refused
Query pregnant Integer Recommended Patient is currently pregnant 0::2;-7; 999 0=No; 1=Yes;2=DK;-7= Refused; 999=Legimately skipped
Query nocontct Integer Recommended Unable to contact 0;1 0 = No;1 = Yes
Query worscond Integer Recommended Condition substantially worse 0;1 0 = No;1 = Yes
Query norespns Integer Recommended Lack of clinical response 0;1 0 = No;1 = Yes
Query anclrytx Integer Recommended Subject requires ancillary treatment 0;1 0 = No;1 = Yes
Query sidefx Integer Recommended Intolerable side-effects 0;1 0 = No;1 = Yes
Query otherrsn Integer Recommended Premature termination. Other reason 0;1 0 = No;1 = Yes
comments_misc String 4,000 Recommended Miscellaneous comments on study, interview, methodology relevant to this form data
study String 100 Recommended Study
Query trtgroup String 2 Recommended Treatment Group N1;N2;R1;R2;R3 N1=Non-Responder Entering Fluvoxamine; N2=Non-Responder Entering Fluoxetine; R1=Maintenance; R2=Responder Entering Fluvoxamine; R3=Responder Entering Fluoxetine
Query q18_8d Integer Recommended Result of contact: Blind broken 0; 1; -7; -8; -9 Complete only if q18_8 = 1
Query medication1_name String 500 Recommended Name first medication that the participant has taken 0 = No medication; 999= Legitimately skipped
Query medication2_name String 200 Recommended Name second medication that the participant has taken 0 = No medication; 999= Legitimately skipped
Query medication3_name String 150 Recommended Name third medication that the participant has taken 0 = No medication; 999= Legitimately skipped
medication4_name String 100 Recommended Name fourth medication that the participant has taken 0 = No medication; 999= Legitimately skipped
Query week Float Recommended Week in level/study 99=week 10-week 14
Query site String 101 Recommended Site Study Site
ancitx1 String 100 Recommended description of treatment
Query ncpill Integer Recommended Non-compliance - Pill count 0;1 0=No; 1=Yes
Query schprb Integer Recommended Subject has scheduling problems 0;1 0=No; 1=Yes
Query lengass Integer Recommended Subject has problems with length of assessment 0;1 0=No; 1=Yes
Query moved Integer Recommended Patient has moved away 0;1;-7 0=No; 1=Yes; -7=Refused
Query personn Integer Recommended Subject doesn't like research staff 0;1 0=No; 1=Yes
Query nrespd Integer Recommended Subject is a non-responder 0;1 0=No; 1=Yes
Query ieeval Integer Recommended Subject agreed to IE evaluation? 0;1 0=No; 1=Yes
Query nc3ses Integer Recommended Subject missed 3 sessions without rescheduling 0;1 0=No; 1=Yes
Query aescode Integer Recommended Staff code number of person completing this form
Query ctf_1 Integer Recommended Subject received extension phase packet 0;1 0=No; 1=Yes
Query compprot Integer Recommended Completed treatment protocol 0;1;-7 0=No; 1=Yes; -7=Refused
Query violate Integer Recommended Protocol Violation 0;1 0=No; 1-Yes
Query hardcode String 1,200 Recommended Significant Protocol Violation Textual description of the protocol violation
Query stdor3_s String 100 Recommended Stage V: Dropout-consent withdrawn, sp.
Query termin_day Integer Recommended Days since baseline that clinic officially terminated the subject
Query ae String 250 Recommended Adverse event Description
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.