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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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Military Service Questionnaire



Download Definition as
Download Submission Template as
Element NameData TypeSizeRequiredDescriptionValue RangeNotesAliases
subjectkeyGUIDRequiredThe NDAR Global Unique Identifier (GUID) for research subjectNDAR*pseduo_guids, pseudo_guids
src_subject_idString20RequiredSubject ID how it's defined in lab/projectid
interview_dateDateRequiredDate on which the interview/genetic test/sampling/imaging/biospecimen was completed. MM/DD/YYYYRequired fieldinterview_dt_t1, interview_dt_t2, interview_dt_t4
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.age_t1_mos, age_t2_mos, age_t3_mos, age_t4_mos
sexString20RequiredSex of the subject
M = Male; F = Femalegender, gender_t1, gender_t2, gender_t3, gender_t4, sex
military1a_t4IntegerRecommendedWhen did you enter the military?: Month
military1b_t4IntegerRecommendedWhen did you enter the military?: Day
psysoc_91IntegerRecommendedYear entered Military0::9999military1c_t4
military2a_t4IntegerRecommendedWhen did you leave the military?: Month
military2b_t4IntegerRecommendedWhen did you leave the military?: Day
military2c_t4IntegerRecommendedWhen did you leave the military?: Year
military3a_t4IntegerRecommendedWhat age where you when you entered the military?
thq17bString50Recommendedb. Approximate age(s) at which you ever had to engage in combat while in military service in an official or unofficial war zonemilitary3b_t4
military4a_t4IntegerRecommendedMilitary theater: WWII Europe0;10= No; 1= Yes
military4b_t4IntegerRecommendedMilitary theater: WWII Pacific0;10= No; 1= Yes
military4c_t4IntegerRecommendedMilitary theater: Korea0;10= No; 1= Yes
military4d_t4IntegerRecommendedMilitary theater: Vietnam0;10= No; 1= Yes
military4e_t4IntegerRecommendedMilitary theater: Bosnia0;10= No; 1= Yes
military4f_t4IntegerRecommendedMilitary theater: Persian Gulf0;10= No; 1= Yes
military4g_t4IntegerRecommendedMilitary theater: Afghanistan OEF0;10= No; 1= Yes
military4h_t4IntegerRecommendedMilitary theater: Iraq OIF0;10= No; 1= Yes
military4i_t4IntegerRecommendedMilitary theater: No Theater0;10= No; 1= Yes
military4j_t4IntegerRecommendedMilitary theater: Other0;10= No; 1= Yes
military4k_t4String20RecommendedMilitary theater: Other (written out)
military5_t4IntegerRecommendedWas your life ever threatened in the military?0::20= No; 1= Yes; 2= Declined to Answer
siteString101RecommendedSiteStudy Sitesiteid
timeptIntegerRecommendedTime Point888 = not applicable; 999 = missingtimepoint
ageenlistedIntegerRecommendedMilitary: Age First Enlisted
ageseparatedactivedutyIntegerRecommendedMilitary: Age Separated from Active Duty
militaryrankString100RecommendedMilitary: Rank
militaryocc_infantryIntegerRecommendedMilitary Occupation: Infantry0;1; -7; -80=No; 1=Yes; -8=DON'T KNOW; -7=REFUSED
militaryocc_combatarmsIntegerRecommendedMilitary Occupation: Other Combat Arms0;1; -7; -80=No; 1=Yes; -8=DON'T KNOW; -7=REFUSED
militaryocc_combatsuppIntegerRecommendedMilitary Occupation: Combat Support0;1; -7; -80=No; 1=Yes; -8=DON'T KNOW; -7=REFUSED
militaryocc_combatsvcIntegerRecommendedMilitary Occupation: Combat Service Support0;1; -7; -80=No; 1=Yes; -8=DON'T KNOW; -7=REFUSED
branch_armyIntegerRecommendedMilitary: Branch-Army [1=Yes]0; 1; -5; -7; -80=Not Selected; 1=Selected; -8=DON'T KNOW; -7=REFUSED; -5=Presented, not answered
branch_navyIntegerRecommendedMilitary: Branch-Navy [1=Yes]0; 1; -5; -7; -80=Not Selected; 1=Selected; -8=DON'T KNOW; -7=REFUSED; -5=Presented, not answered
branch_airforceIntegerRecommendedMilitary: Branch-Air Force [1=Yes]0; 1; -5; -7; -80=Not Selected; 1=Selected; -8=DON'T KNOW; -7=REFUSED; -5=Presented, not answered
branch_coastguardIntegerRecommendedMilitary: Branch-Coast Guard [1=Yes]0; 1; -5; -7; -80=Not Selected; 1=Selected; -8=DON'T KNOW; -7=REFUSED; -5=Presented, not answered
branch_nationalguardIntegerRecommendedMilitary: Branch-National Guard [1=Yes]0; 1; -5; -7; -80=Not Selected; 1=Selected; -8=DON'T KNOW; -7=REFUSED; -5=Presented, not answered
branch_dkIntegerRecommendedMilitary: Branch-DONT KNOW [1=Yes]0; 1; -5; -7; -80=Not Selected; 1=Selected; -8=DON'T KNOW; -7=REFUSED; -5=Presented, not answered
branch_refIntegerRecommendedMilitary: Branch-REFUSED [1=Yes]0; 1; -5; -7; -80=Not Selected; 1=Selected; -8=DON'T KNOW; -7=REFUSED; -5=Presented, not answered
yearsactivedutyIntegerRecommendedMilitary: Years Active Duty
currentmilitarystatusIntegerRecommendedMilitary: Current Military Status1 :: 3; -5; -7; -81=Still on active duty; 2=In the deactivated National Guard or Reserve; 3=No longer in the military; -8=DON'T KNOW; -7=REFUSED; -5=Presented, not answered
military_serviceIntegerRecommendedHave you ever served in the U.S. Military? PX631301_Military_Service
military_mermarinesIntegerRecommendedIn which branch of the service did you serve? Merchant Marines PX631301_Military_Service_Branch_MerchantMarines
military_cgreservesIntegerRecommendedIn which branch of the service did you serve? Coast Guard Reserves PX631301_Military_Service_Branch_CoastGuardReserves
military_deployIntegerRecommendedHow many times were you deployed? PX631301_Military_Service_Times_Deployednumtimescombattheatre
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: milsq01 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.