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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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Childrens Report of Sleep Patterns



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
t_sleep_1IntegerRecommendedOnce you turn your light off on weekdays, how long does it usually take you to fall asleep?1=No time at all, I fall asleep very quickly; 2=A few minutes (5-10 minutes); 3=A little while (10-30 minutes); 4=A long time (more than 30 minutes)
t_sleep_2String15RecommendedWhat time do you usually wake up on weekdays?
sleep_txtString200RecommendedComments on sleep schedule during weekends or summer
t_sleep_3String15RecommendedWhat time do you usually go to bed on weekends?
t_sleep_4IntegerRecommendedHow often do you usually go to bed at this time?1;21= Both nights; 2= one weekend night
t_sleep_5IntegerRecommendedOnce you turn your light off on weekends, how long does it usually take you to fall asleep?1::41 =No time at all, I fall asleep very quickly; 2 =A few minutes (5-10 minutes); 3 = A little while (10-30 minutes); 4 = A long time (more than 30 minutes)
t_sleep_6String15RecommendedWhat time do you usually wake up on weekends?
t_sleep_7IntegerRecommendedAfter you have gone to sleep at night, how often do you usually wake up during the night?1::41 = Almost every night (5-7 times/week); 2 = Several times a week (1-4 times/week); 3 = Every now and then (2-3 times/month) ; 4 = I almost never wake up during the night
t_sleep_8IntegerRecommendedHow long does it usually take you to go back to sleep after you wake up during the night?1::51 = I usually don't wake up during the night; 2 = No time at all, I go back to sleep very quickly; 3 =A few minutes (5-10 minutes); 4 =A little while (10-30 minutes) ; 5 =A long time (more than 30 minutes);
t_sleep_9IntegerRecommendedSome kids take naps in the daytime every day, others never do. Do you nap?1::41 = I never nap; 2 = I never nap unless I am sick; 3 =I sometimes nap; 4 =I nap almost every day;
t_sleep_10IntegerRecommendedMost nights, do you feel you get1::31 = too much sleep?; 2 = the right amount of sleep?; 3 =too little sleep?;
t_sleep_11IntegerRecommendedMost nights, do you consider yourself to be1::41 = a great sleeper?; 2 = a good sleeper?; 3 =an okay sleeper?; 4 =a poor sleeper?;
t_sleep_12IntegerRecommendedHow often have you had trouble falling asleep at bedtime?1::51 = Never; 2 = Not very often; 3 =Sometimes; 4 =Usually; 5 =Always;
t_sleep_13IntegerRecommendedHow often do you wake up during the night?1::51 = Never; 2 = Not very often; 3 =Sometimes; 4 =Usually; 5 =Always;
t_sleep_14_1IntegerRecommendedHow often do you feel sleepy or fall asleep when you are Eating1::51 = Never; 2 = Not very often; 3 =Sometimes; 4 =Usually; 5 =Always;
t_sleep_14_2IntegerRecommendedHow often do you feel sleepy or fall asleep when you are Talking with someone else1::51 = Never; 2 = Not very often; 3 =Sometimes; 4 =Usually; 5 =Always;
t_sleep_14_3IntegerRecommendedHow often do you feel sleepy or fall asleep when you are At school1::51 = Never; 2 = Not very often; 3 =Sometimes; 4 =Usually; 5 =Always;
t_sleep_14_4IntegerRecommendedHow often do you feel sleepy or fall asleep when you are Playing1::51 = Never; 2 = Not very often; 3 =Sometimes; 4 =Usually; 5 =Always;
t_sleep_14_5IntegerRecommendedHow often do you feel sleepy or fall asleep when you are Riding in a car or bus for a short time (less than 20 minutes)1::51 = Never; 2 = Not very often; 3 =Sometimes; 4 =Usually; 5 =Always;
comments_miscString4,000RecommendedMiscellaneous comments on study, interview, methodology relevant to this form data
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: crsp01 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.