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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. 


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.

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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 bid, case_id
interview_date Date Required Date on which the interview/genetic test/sampling/imaging/biospecimen was completed. MM/DD/YYYY Required field
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. bslage
sex String 20 Required Sex of the subject M;F; O; NR M = Male; F = Female; O=Other; NR = Not reported gender
Query site String 101 Recommended Site Study Site site_no
Query trt_grp String 10 Recommended Treatment Group Assignment 1;1AO;1CT;2; 3;4;5;6;7;8;9;10 1=Group 1 first 8 weeks; 1AO=Group 1 8 week add on; 1CT=Group 1 8 week cross taper; 2=Group 2; 3=Group 3; 4 =active; 5=sham; 6=none; 7=ESDM High intensity; 8=ESDM Low intensity; 9=EIBI High intensity; 10=EIBI Low intensity; ESDM = Early Start Denver Model; EIBI = Early and Intensive Behavioral Intervention
Query days_baseline Integer Recommended Days since baseline bsldays
Query etype String 10 Recommended Rating Period BSL;WK1;WK2;WK3;WK4;WK5;WK6;WK7;WK8;WK9;WK10;WK11;WK12;WK13;WK14;WK15;WK16 BSL=Baseline; WK1-WK16=Weeks 1-16
Query respond_detail_oth_spec String 255 Recommended Respondent details informnt
Query relationship Integer Recommended Relationship of respondent to individual
1 = Biological mom; 2 = Biological dad; 3 = Grandparent; 4 = Special education (sped) teacher; 5 = General education teacher; 6 = Occupational therapist; 7 = Speech and language therapist; 8 = Behavioral therapist; 9 = Paraprofessional; 10 = Aide; 11 = Principal; 12 = Administrator; 13 = 90=Other; 14 = Content teacher; 15 = Parent center director; 16 = Self; 17=Adoptive mother; 18=Adoptive father; 19=Foster mother; 20 = Foster father; 21=Grandmother; 22=Grandfather; 23=Step-mother; 24 = Step-father; 25=Aunt; 26=Uncle; 27=Missing Data; 28=Both parents;31= Grandmother from mother side; 32= Grandfather from mother side; 33= Grandmother from father side; 34= Grandfather from father side; 36= Brother; 37= Sister; 38= Cousin; 39= female caregiver; 40=male caregiver; 41=Female child; 42=Male child; 43=Spouse/Mate; 44=Friend; 45=Parent; 46=Significant other; 47=Sibling; 48=Son/Daughter; 49=Son-in-law/Daughter-in law; 50=Other Relative; 51=Paid caregiver; 52=Friends; 53=Roommate; 54=Supervisor; 55=mother's boyfriend; 56=other parental figure; 57=Summary; 58=counselor ; 59 = other female relative; 60 = other male relative; 61 = non-relative ; 62=Maternal Aunt; 63=Maternal Uncle; 64=Maternal Cousin; 65 = Paternal Aunt; 66=Paternal Uncle; 67=Paternal Cousin ; 68=Biological/Adoptive Mother and Grandmother; 69=Biological/Adoptive Mother and Stepmother and Grandmother; 70=Biological/Adoptive Mother and Grandmother and Foster Father; 71=Biological/Adoptive Mother and Stepmother and Foster Mother; 72=Biological/Adoptive Mother and Foster Mother; 73=Biological/Adoptive Mother and Biological/Adoptive Father; 74=Biological/Adoptive Mother and Stepmother and Biological/Adoptive Father; 75=Biological/Adoptive Mother and Other; 76=Biological/Adoptive Mother and Stepmother and Stepfather; 77=Biological/Adoptive Mother and Stepfather; 78=Biological/Adoptive Mother and Grandfather; 79=Biological/Adoptive Mother and Stepmother and Foster Father; 80=Biological/Adoptive Mother and Stepmother; 81=Guardian, female; 82=Other female; 83=Guardian, male; 84=Other male; 85=Other/Grandparent/Nanny; 86 = Mother, Father, Guardian; 87 = Daughter, son, grandchild; 88 = Professional (e.g., social worker, nurse, therapist, psychiatrist, or group home staff); -999=Missing; 89 = Biological parent; 91 = Stepparent; 92 = Adoptive parent; 93 = Foster parent infrmnt2
Query dfrsn Integer Recommended Reason for discontinuation 1::7 1=Hospitalization; 2=Pregnancy; 3=Onset of severe illness; 4=Worsening of symptoms; 5=Use of more than 10 doses of Chlorpromazine; 6=Weight/BMI increase; 7=Other
Query df_reason String 10 Recommended Reason for discontinuation recorded HOSP;PREG;ILL;WORS;CHLR;WGT;CHNG;SIDE;GEOG;OTHR HOSP=Hospitalization; PREG=Pregnancy; ILL=Onset of severe illness; WORS=Worsening of symptoms; CHLR=Use of more than 10 doses of Chlorpromazine; WGT=Weight/BMI increase; CHNG=Changed mind; GEOG=Geographical relocation; OTHR=Other
Query df_commnt String 250 Recommended If other-provide details
Query rtda1 Integer Recommended What date was the assigned study treatment stopped? 0::999 rtda2_1
Query rtda2 Integer Recommended Did patient successfully complete the protocol on the assigned treatment? 0;1 1=Yes; 0=No rtda1_1
Query rtda3 Integer Recommended Was study treatment discontinued for administrative reasons? 0;1 1=Yes; 0=No;Note: This implies that both the patient and the clinical staff judge the assigned antipsychotic treatment to be a success (i.e. adequately effective, with tolerable or no side effects), and that treatment would have continued if not for the administrative reason independent of the study procedures.
Query visit String 60 Recommended Visit name
Query fseqno Integer Recommended Sequence Number 0::999 The FSEQNO variable in the ADJ form has a special interpretation compared to other forms. For example, ADJ FSEQNO of '1' can be thought of as being '001', FSEQNO of '2' can be thought of as being '002', and FSEQNO of '3' can be thought of as being '003'. The first digit of FSEQNO relates to the corresponding ENF sequence number at that visit and the third digit relates to the specific adjudicator who completed the adjudication form.
version_form String 121 Recommended Form used/assessment name vers
Query daysrz Integer Recommended days since randomization rtda0b
Query rtda1a Integer Recommended Did patient complete 24 weeks on the assigned anti-psychotic? (Y/N) 0;1 0=No; 1=Yes
Query rtda2a Integer Recommended What date was the study anti-psychotic stopped? [days since randomization] 0::365
Query rtda3a Integer Recommended What was the reason the study anti-psychotic was stopped? (choose the primary reason) A. Efficacy/Inadequate therapeutic effect: Positive symptoms, negative symptoms, mood symptoms, other. B. Unacceptable side effects: Weight, lipids, glucose, EPS, TD, akathisia/activation, sedation, insomnia, agitation, sexual side effects, nausea, other. C. Patient refusal : Does not see need for or benefit from antipsychotic, no longer wants to participate in study. D. Patient dropped out, no information available E. Death/Illness F. Administrative 1;3;4;6;10;12;13;16;17;18;19;21;999 01=Positive Symptoms; 03=Mood Symptoms; 04=Other efficacy/inadequate therapeutic effect (specify); 06=Lipids; 10=Akathisia/activation; 12=Insomnia; 13=Agitation; 16=Other unacceptable side effects (specify); 17=Does not see need for or benefit from antipsychotic treatment; 18=No longer wants to participate in study (but will still take meds); 19=Patient dropped out, no information available; 21=Administrative (specify); 999= Legitimately skipped
Query rtda3_1 Integer Recommended What was the primary reason the study treatment was stopped? 01::19; 999 01=Weight; 02=Diarrhea; 03=Nausea; 04=Vomiting; 05=Abdominal Discomfort; 06=Headache; 07=Weakness; 08=Muscle Pain; 09=Alcohol Use; 10=Lipids; 11=Glucose; 12=GGT; 13=Other; 14=Patient Refusal:Does not see need for or benefit from study medication; 15=Patient Refusal: Unacceptable side effects; 16=Patient Refusal: No longer wants to participate in study; 17=Patient dropped out, no information available; 18=Death/Illness; 19=Administrative; 999=Legitimately skipped
tx_pd_oth_spec String 30 Recommended Reason for discontinuation: Specify 'other' reason
tx_lt8_complete Integer Recommended Did the participant complete less than 8 treatment sessions 1;2 1 = Yes; 2 = No
final_tx_date Date Recommended Date of final treatment
final_tx_num Integer Recommended Final treatment number 1::21
tx_prm_discon Integer Recommended Was treatment prematurely discontinued 1;2 1 = Yes; 2 = No
tx_pd_wrse_dprs Integer Recommended Reason for discontinuation: worsening depression 1;2 1 = Yes; 2 = No
tx_pd_inc_si Integer Recommended Reason for discontinuation: increase in suicidal ideation 1;2 1 = Yes; 2 = No
tx_pd_manic Integer Recommended Reason for discontinuation: clinically significant hypomanic or manic symptoms 1;2 1 = Yes; 2 = No
tx_pd_consent Integer Recommended Reason for discontinuation: withdrew consent 1;2 1 = Yes; 2 = No
tx_pd_miss_seiz Integer Recommended Reason for discontinuation: Missed seizures on 2 consecutive treatment sessions 1;2 1 = Yes; 2 = No
tx_pd_noncomp Integer Recommended Reason for discontinuation: Non-compliance with treatment schedule 1;2 1 = Yes; 2 = No
tx_pd_oth Integer Recommended Reason for discontinuation: Other reason 1;2 1 = Yes; 2 = No
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.