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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



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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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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.

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Alternative Medications and Therapies

1,004 Shared Subjects

Clinical Assessments
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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 aid
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.
sex String 20 Required Sex of the subject M;F M = Male; F = Female gender
site String 101 Recommended Site Study Site ASITE
Query clinicid Integer Recommended Clinic ID ACLINIC
Query interv Integer Recommended Intervention Status 0;1 1=ITV, intervention; 0=TAU, treatment as usual
Query visit String 50 Recommended Visit name WAVE
Query days_baseline Integer Recommended Days since baseline LOF
Query arx1 Integer Recommended In the past 6 months, have you taken any nonprescription medications or herbal remedies to help with your mood or energy? This includes preparations such as Kava Kava, or St. Johns Wort. 0;1 0=No; 1=Yes
Query arx2a Integer Recommended Taking Chamomile to help you with your mood or energy? 0;1 0=No; 1=Yes
Query arx2b Integer Recommended Taking Kava to help you with your mood or energy? 0;1 0=No; 1=Yes
Query arx2c Integer Recommended Taking Lavender to help you with your mood or energy? 0;1 0=No; 1=Yes
Query arx2d Integer Recommended Taking St. John's Wort to help you with your mood or energy? 0;1 0=No; 1=Yes
Query arx2e Integer Recommended Taking Valerian to help you with your mood or energy? 0;1 0=No; 1=Yes
Query arx2f Integer Recommended Taking Chasteberry to help you with your mood or energy? 0;1 0=No; 1=Yes
Query arx2g Integer Recommended Taking Black Cohosh to help you with your mood or energy? 0;1 0=No; 1=Yes
Query arx2h Integer Recommended Taking Other (Specify) to help you with your mood or energy? 0;1 0=No; 1=Yes
Query arx3 Integer Recommended In the past 6 months have you used any therapies or healing practices (such as acupuncture, biofeedback, going to a chiropractor, prayer or spiritual practices) for problems with your mood or energy? 0;1 0=No; 1=Yes
Query arx4a Integer Recommended Used Acupuncture 0;1 0=No; 1=Yes
Query arx4b Integer Recommended Used Biofeedback 0;1 0=No; 1=Yes
Query arx4c Integer Recommended Used Chiropractic 0;1 0=No; 1=Yes
Query arx4d Integer Recommended Used Energy Healing 0;1 0=No; 1=Yes
Query arx4e Integer Recommended Used Exercise or Movement or Therapy 0;1 0=No; 1=Yes
Query arx4f Integer Recommended Used Homeopathy 0;1 0=No; 1=Yes
Query arx4g Integer Recommended Used Hypnosis 0;1 0=No; 1=Yes
Query arx4h Integer Recommended Used Imagery Techniques 0;1 0=No; 1=Yes
Query arx4i Integer Recommended Used Massage Therapy 0;1 0=No; 1=Yes
Query arx4j Integer Recommended Used Prayer or Other Spiritual Practices 0;1 0=No; 1=Yes
Query arx4k Integer Recommended Used Relaxation or Meditation Techniques 0;1 0=No; 1=Yes
Query specialdiet_past String 6 Recommended taking special diets in the past? TRUE;FALSE; NK ARX4L
Query arx4m Integer Recommended Used Spiritual Healing by Others 0;1 0=No; 1=Yes
Query arx4n Integer Recommended Used Any Other Non-Traditional Remedy or Therapy 0;1 0=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.