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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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NIMH Data Archive
NDA ABCD CCF OAI NIAAADA AMP SCZ HEAL NBB

ABCD Youth Fitbit Weekly Physical Activity Summaries

0 Shared Subjects

This instrument includes weekly physical activity (and sedentary behavior) for all days with sufficient wear time for inclusion (>600 minutes of daytime wear), including minutes in a variety of activity intensities and steps taken that are broken into weekday only, weekend only, and all days of week.
Clinical Assessments
Activity
04/08/2020
abcd_fbwpas01
10/27/2020
View Change History
01
Definition
Submission Template
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
interview_date Date Required Date on which the interview/genetic test/sampling/imaging/biospecimen was completed. MM/DD/YYYY
interview_age Integer Required Age in months at the time of the interview/test/sampling/imaging. 0::1440 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 subject at birth M;F; O; NR M = Male; F = Female; O=Other; NR = Not reported gender
eventname String 60 Required The event name for which the data was collected
fit_ss_protocol_startdate Date Recommended First day of (expected) wear of 3 week protocol fitbit_ss_protocol_startdate
fit_ss_day_wkno Integer Recommended Week number starting from first day of protocol wear fitbit_ss_day_wkno
fit_ss_day_weekend_ind Integer Recommended 0=weekdays only, 1=weekend only, 2=weekday and weekend 0;1;2 fitbit_ss_day_weekend_ind
fit_ss_wk_avg_day_min Float Recommended Average number of minutes of wear not excluded or considered sleep (by 60 second sleep record) Individual day only included if day minutes >599 fitbit_ss_wk_avg_day_min
fit_ss_wk_avg_sleep_min Float Recommended Average number of minutes of wear considered sleep (by 60 second sleep record) not excluded due to HR quality checks Individual day only included if day minutes >599 fitbit_ss_wk_avg_sleep_min
fit_ss_wk_total_steps Float Recommended Sum of steps during day_min on included days Individual day only included if day minutes >599 fitbit_ss_wk_total_steps
fit_ss_wk_sedentary_min Float Recommended Sum of minutes spent in sedentary (<1.5 METS) activity during day_min on included days Individual day only included if day minutes >599 fitbit_ss_wk_sedentary_min
fit_ss_wk_light_active_min Float Recommended Sum of minutes spent in light (1.5-2.9METS) activity during day_min on included days Individual day only included if day minutes >599 fitbit_ss_wk_light_active_min
fit_ss_wk_farily_active_min Float Recommended Sum of minutes spent in moderate (3-5.9 METS) activity during day_min on included days Individual day only included if day minutes >599 fitbit_ss_wk_farily_active_min
fit_ss_wk_very_active_min Float Recommended Sum of of minutes spent in vigorous (6+ METS) activity during day_min on included days Individual day only included if day minutes >599 fitbit_ss_wk_very_active_min
fit_ss_wk_avg_steps Float Recommended Average number of daily steps during day_min during included days Individual day only included if day minutes >599 fitbit_ss_wk_avg_steps
fit_ss_wk_average_met_value Float Recommended Average METS/min during day_min on included days Individual day only included if day minutes >599 fitbit_ss_wk_average_met_value
fit_ss_wk_avg_sedentary_min Float Recommended Average minutes spent in sedentary (<1.5 METS) activity during day_min on included days Individual day only included if day minutes >599 fitbit_ss_wk_avg_sedentary_min
fit_ss_wk_avg_light_active_min Float Recommended Average minutes spent in light (1.5-2.9METS) activity during day_min on included days Individual day only included if day minutes >599 fitbit_ss_wk_avg_light_active_min
fit_ss_wk_avg_farily_at_min Float Recommended Average minutes spent in moderate (3-5.9 METS) activity during day_min on included days Individual day only included if day minutes >599 fitbit_ss_wk_avg_farily_active_min
fit_ss_wk_avg_very_active_min Float Recommended Average minutes spent in vigorous (>6 METS) activity during day_min on included days Individual day only included if day minutes >599 fitbit_ss_wk_avg_very_active_min
fit_ss_fitbit_rest_hr Float Recommended Average resting heart rate from all included days from the daily level fitbit record Low(er) resting heart rate is usually indicative of a) stronger cardiac muscle/better cardiorespiratory fitness and b) improved (para)sympathetic nervous tone fitbit_ss_fitbit_rest_hr, fitbit_ss_fitbitbit_rest_hr
fit_ss_weekend_count Integer Recommended Number of weekend days included in averages Individual day only included if day minutes >599 fitbit_ss_weekend_count
fit_ss_weekday_count Integer Recommended Number of weekdays included in averages Individual day only included if day minutes >599 fitbit_ss_weekday_count
fit_ss_meet_abcd_rule Integer Recommended 0=no, 1=yes. ABCD inclusion rule is minimum of 4 days, 1 of which must be a weekend day 0;1 Individual day only included if day minutes >599 fitbit_ss_meet_abcd_rule
fit_ss_perday_totalsteps Float Recommended Number of steps per day according to fitbit daily level summary Individual day only included if day minutes >599 based upon ABCD QC record fitbit_ss_perday_total_steps
fit_ss_perday_sedentarymin Float Recommended Average minutes spent in sedentary (<1.5 METS) activity during day_min on included days based upon daily level fitbit record Individual day only included if day minutes >599 based upon ABCD QC record fitbit_ss_perday_sedentary_min
fit_ss_perday_lightlyactivemin Float Recommended Average minutes spent in light (1.5-2.9METS) activity during day_min on included days based upon daily level fitbit record Individual day only included if day minutes >599 based upon ABCD QC record fitbit_ss_perday_lightly_active_min
fit_ss_perday_fairlyactivemin Float Recommended Average minutes spent in moderate (3-5.9 METS) activity during day_min on included days based upon daily level fitbit record Individual day only included if day minutes >599 based upon ABCD QC record fitbit_ss_perday_fairly_active_min
fit_ss_perday_veryactivemin Float Recommended Average minutes spent in vigorous (6+ METS) activity during day_min on included days based upon daily level fitbit record Individual day only included if day minutes >599 based upon ABCD QC record fitbit_ss_perday_very_active_min
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

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