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Data Structures with shared data
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Actigraphy Recording

137 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* guid
src_subject_id String 20 Required Subject ID how it's defined in lab/project ssidno00
interview_date Date Required Date on which the interview/genetic test/sampling/imaging/biospecimen was completed. MM/DD/YYYY recording_end_date
interviewage Integer Required Age in months at the time of the interview/test/sampling/imaging. 0 :: 1200 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. recording_end_age
sex String 20 Required Sex of subject at birth M;F; O; NR M = Male; F = Female; O=Other; NR = Not reported gender, ssgndr
model String 100 Recommended Model of the actigraph
start_date Date Recommended Start date of the actigraphy recording in_bed_date
act_start_time String 20 Recommended Start time of the actigraphy recording in_bed_time, start_time
end_date Date Recommended End date of the actigraphy recording out_bed_date
end_time String 20 Recommended End time of the actigraphy recording out_bed_time
time_zone String 20 Recommended Time zone (e.g. eastern time)
data_file1 File Recommended Data file 1 date_file1
data_file1_type String 300 Recommended type of data file 1
fit_ss_wake_count Integer Recommended Total number of unique awakenings during the sleep period (excludes final awakening)
fit_ss_sleep_efficiency Integer Recommended Ratio of time spent asleep to total time in bed, with total time in bed including true sleep and waking episodes
eventname String 60 Recommended The event name for which the data was collected
fit_ss_weekday Integer Recommended Day of the week 1::7 1=Sunday, 2=Monday, 3=Tuesday, 4=Wednesday, 5=Thursday, 6=Friday, 7=Saturday
fit_ss_first_inbed_minutes String 30 Recommended First Minute that the participant was identified as being in-bed (but not necessarily asleep) All data is offset by 12 hours so that 00:00= noon; 23:59=11:59A
fit_ss_first_sleep_minutes String 30 Recommended First Minute that the participant was identified as being asleep All data is offset by 12 hours so that 00:00= noon; 23:59=11:59A
fit_ss_outbed_minutes String 30 Recommended First Minute that the participant was identified as being out-bed (but may have woken up prior to this) All data is offset by 12 hours so that 00:00= noon; 23:59=11:59A
fit_ss_wakeup_minutes String 30 Recommended First Minute that the participant was identified as being awake All data is offset by 12 hours so that 00:00= noon; 23:59=11:59A
fit_ss_total_sleep_minutes Integer Recommended Total time within the sleep window (including wake periods) as calculated by 30 second sleep record
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.