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NIMH Data Archive
NDA ABCD CCF OAI NIAAADA AMP SCZ HEAL

Heart Rate Variability

0 Shared Subjects

N/A
Clinical Assessments
Phys Exam
12/28/2018
hrv01
12/05/2023
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
version_form String 121 Recommended Form used/assessment name
hrv1 Float Recommended Heart rate difference score between present and previous epoch: 2 - 1
hrv2 Float Recommended Heart rate difference score between present and previous epoch: 3 - 2
hrv3 Float Recommended Heart rate difference score between present and previous epoch: 4 - 3
hrv4 Float Recommended Heart rate difference score between present and previous epoch: 5 - 4
hrv5 Float Recommended Heart rate difference score between present and previous epoch: 6 - 5
hrv6 Float Recommended Heart rate difference score between present and previous epoch: 7 - 6
hrv7 Float Recommended Heart rate difference score between present and previous epoch: 8 - 7
hrv8 Float Recommended Heart rate difference score between present and previous epoch: 9 - 8
hrv9 Float Recommended Heart rate difference score between present and previous epoch: 10 - 9
heart_rate1 Float Recommended Average heart rate for task epoch 1
heart_rate2 Float Recommended Average heart rate for task epoch 2
heart_rate3 Float Recommended Average heart rate for task epoch 3
heart_rate4 Float Recommended Average heart rate for task epoch 4
heart_rate5 Float Recommended Average heart rate for task epoch 5
heart_rate6 Float Recommended Average heart rate for task epoch 6
heart_rate7 Float Recommended Average heart rate for task epoch 7
heart_rate8 Float Recommended Average heart rate for task epoch 8
heart_rate9 Float Recommended Average heart rate for task epoch 9
heart_rate10 Float Recommended Average heart rate for task epoch 10
Query visit String 60 Recommended Visit name
fhrv Float Recommended Standard deviation of fetal heart rate across a set time period. 999=Missing
fhrtime Float Recommended Duration of fetal heart rate collection period in minutes time
hrv_power_hfb Float Recommended Average Heart Rate Variability in the High Frequency Band (HFB) 0::10 milliseconds squared
hrv_rmssd Float Recommended Root Mean Square of Successive Differences (RMSSD) between normal heartbeats for each task 0::10000 milliseconds
hrv_task_type String 100 Recommended Type of task i.e., Bandit, Picture Type, Shock or Reward
hfrsapk Float Recommended HF(High Frequency)/RSA(Respiratory Sinus Arrhythmia) Peak Power ms**2/Hz
lfhfrat Float Recommended LF(Low Frequency)/HF(High Frequency) Ratio ms**2/Hz
meanhr Float Recommended Mean Heart Rate beats/minute
meanibi Float Recommended Mean IBI(Interbeat Interval) Milliseconds
respir_amplitude Float Recommended Respiration Amplitude 0::99999
respir_rate Float Recommended Respiration Rate 1 :: 99999
sampfreq Integer Recommended Sampling Frequency Hz
strttm Float Recommended Start Time In seconds
endtm Float Recommended End Time In seconds
ctrpeaks Integer Recommended Number of R's Found 0::99
rsa String 50 Recommended Respiratory Sinus Arrhythmia (RSA) Reactivity
avnn Float Recommended Average of Normal-to-Normal Intervals in ms 1 :: 99999
sdnn Float Recommended Standard deviation of normal-to-normal intervals 0::200
rmssd Float Recommended Root-mean square differences of successive R-R intervals. 0::150
nn50 Float Recommended Number of Interval Differences of Successive NN Intervals more than 50 ms 0::99999
pnn50 Float Recommended Mean number of times per hour in which the change in consecutive NN intervals exceeds 50 milliseconds. 0::1
file_name File 100 Recommended Protocol document included in the submission package.
taskid01 Integer Recommended ID of the task See protocol documentation for epoch definitions
vlfpower Float Recommended VLF(Very Low Frequency) Power ms**2/Hz
vlfpeak Float Recommended VLF(Very Low Frequency) Peak Power ms**2/Hz
lfpower Float Recommended LF(Low Frequency) Power ms**2/Hz
lfpeak Float Recommended LF(Low Frequency) Peak Power ms**2/Hz
hfrsapw Float Recommended HF(High Frequency)/RSA(Respiratory Sinus Arrhythmia) Power ms**2/Hz
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.

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