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NDAR provides a single access to de-identified autism research data. For permission to download data, you will need an NDAR account with approved access to NDAR or a connected repository (AGRE, IAN, or the ATP). For NDAR 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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The filters you have selected from various query interfaces will be stored here, in the 'Filter Cart'. The database will be queried using filters added to your 'Filter Cart', when multiple filters are defined, each will be executed using 'AND' logic, so with each filter that is applied the result set gets smaller.

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Description
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Notes
Data Structures with shared data
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International Physical Activity Questionnaire

ipaq

01

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Element NameData TypeSizeRequiredDescriptionValue RangeNotesAliases
subjectkeyGUIDRequiredThe NDAR Global Unique Identifier (GUID) for research subjectNDAR*
src_subject_idString20RequiredSubject ID how it's defined in lab/projectsubject
interview_dateDateRequiredDate on which the interview/genetic test/sampling/imaging was completed. MM/DD/YYYYRequired fieldipaqdate, v1_ipaq_date
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.v1_ipaq_age
genderString20RequiredSex of the subjectM;FM = Male; F = Female
ipaq1IntegerRecommendedDo you currently have a job or do any unpaid work outside your home0;10=No;1=Yes
ipaq2IntegerRecommendedDuring the last 7 days, on how many days did you do vigorous physical activities like heavy lifting, digging, aerobics, or fast cycling? (# days per week)v1_ipaq_vigorous_daysinpastweek, vigdays
ipaq3aIntegerRecommendedHow much time did you usually spend doing vigorous physical activities on one of those days? (hours per day)vighours
ipaq3bIntegerRecommendedHow much time did you usually spend doing vigorous physical activities on one of those days? (minutes per day)999 = Unknownv1_ipaq_vigorous_minutesperdayinpastweek, vigminutes
ipaq4IntegerRecommendedDuring the last 7 days, on how many days did you do moderate physical activities like carrying light loads, bicycling at a regular pace, or doubles tennis? (# days per week)moddays, v1_ipaq_moderate_daysinpastweek
ipaq5aIntegerRecommendedHow much time did you usually spend doing moderate physical activities on one of those days? (hours per day)modhours
ipaq5bIntegerRecommendedHow much time did you usually spend doing moderate physical activities on one of those days? (minutes per day)999 = Unknownmodminutes, v1_ipaq_moderate_minutesperdayinpastweek
ipaq6IntegerRecommendedDuring the last 7 days, on how many days did you walk for at least ten minutes at a time? (# days per week)v1_ipaq_walking_daysinpastweek, walkdays
ipaq7aIntegerRecommendedHow much time did you usually spend walking on one of those days? (hours per day)walkhours
ipaq7bIntegerRecommendedHow much time did you usually spend walking on one of those days? (minutes per day)999 = Unknownv1_ipaq_walking_minutesperdayinpastweek, walkminutes
ipaq8IntegerRecommendedDuring the last 7 days, on how many days did you travel in a motor vehicle like a train, bus, car, or tram (days per week)
ipaq9aIntegerRecommendedHow much time did you usually spend on one of those days traveling in a train, bus, car, tram, or other kind of motor vehicle (hours per day)
ipaq9bIntegerRecommendedHow much time did you usually spend on one of those days traveling in a train, bus, car, tram, or other kind of motor vehicle (minutes per day)
ipaq10IntegerRecommendedDuring the last 7 days , on how many days did you bicycle for at least 10 minutes at a time to go from place to place (days per week)
ipaq11aIntegerRecommendedHow much time did you usually spend on one of those days to bicycle from place to place (hours per week)
ipaq11bIntegerRecommendedHow much time did you usually spend on one of those days to bicycle from place to place (minutes per week)
ipaq12IntegerRecommendedDuring the last 7 days, on how many days did you walk for at least 10 minutes at a time to go from place to place (days per week)
ipaq13aIntegerRecommendedHow much time did you usually spend on one of those days walking from place to place (hours per week)
ipaq13bIntegerRecommendedHow much time did you usually spend on one of those days walking from place to place (days per week)
ipaq14IntegerRecommendedThink about only those physical activities that you did for at least 10 minutes at a time. During the last 7 days, on how many days did you do vigorous physical activities like heavy lifting, chopping wood, shoveling snow, or digging in the garden or yard (days per week)
ipaq15aIntegerRecommendedHow much time did you usually spend on one of those days doing vigorous physical activities in the garden or yard (hours per day)
ipaq15bIntegerRecommendedHow much time did you usually spend on one of those days doing vigorous physical activities in the garden or yard (minutes per day)
ipaq16IntegerRecommendedAgain, think about only those physical activities that you did for at least 10 minutes at a time. During the last 7 days, on how many days did you do moderate activities like carrying light loads, sweeping, washing windows, and raking in the garden or yard (days per week)
ipaq17aIntegerRecommendedHow much time did you usually spend on one of those days doing moderate physical activities in the garden or yard (hours per day)
ipaq17bIntegerRecommendedHow much time did you usually spend on one of those days doing moderate physical activities in the garden or yard (minutes per day)
ipaq18IntegerRecommendedOnce again, think about only those physical activities that you did for at least 10 minutes at a time. During the last 7 days, on how many days did you do moderate activities like carrying light loads, washing windows, scrubbing floors and sweeping inside your home (days per week)
ipaq19aIntegerRecommendedHow much time did you usually spend on one of those days doing moderate physical activities inside your home (hours per day)
ipaq19bIntegerRecommendedHow much time did you usually spend on one of those days doing moderate physical activities inside your home (minutes per day)
ipaq20IntegerRecommendedNot counting any walking you have already mentioned, during the last 7 days, on how many days did you walk for at least 10 minutes at a time in your leisure time (days per week)
ipaq21aIntegerRecommendedHow much time did you usually spend on one of those days walking in your leisure time (hours per day)
ipaq21bIntegerRecommendedHow much time did you usually spend on one of those days walking in your leisure time (minutes per day)
ipaq22IntegerRecommendedThink about only those physical activities that you did for at least 10 minutes at a time. During the last 7 days, on how many days did you do vigorous physical activities like aerobics, running, fast bicycling, or fast swimming in your leisure time (days per week)
ipaq23aIntegerRecommendedHow much time did you usually spend on one of those days doing vigorous physical activities in your leisure time (hours per week)
ipaq23bIntegerRecommendedHow much time did you usually spend on one of those days doing vigorous physical activities in your leisure time (days per week)
ipaq24IntegerRecommendedAgain, think about only those physical activities that you did for at least 10 minutes at a time. During the last 7 days, on how many days did you do moderate physical activities like bicycling at a regular pace, swimming at a regular pace, and doubles tennis in your leisure time (days per week)
ipaq25aIntegerRecommendedHow much time did you usually spend on one of those days doing moderate physical activities in your leisure time (hours per day)
ipaq25bIntegerRecommendedHow much time did you usually spend on one of those days doing moderate physical activities in your leisure time (days per day)
ipaq26aIntegerRecommendedDuring the last 7 days, how much time did you spend sitting on a week day? (hours per day)
ipaq26nIntegerRecommendedDuring the last 7 days, how much time did you spend sitting on a week day? (minutes per day)999 = Unknownv1_ipaq_sitting_minutesperdayinpastweek
ipaq27aIntegerRecommendedDuring the last 7 days, how much time did you spend sitting on a weekend day? (hours per day)
ipaq27bIntegerRecommendedDuring the last 7 days, how much time did you spend sitting on a weekend day? (minutes per day)
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: ipaq01 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.