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Data Structures with shared data
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Birth Form

3 Shared Subjects

Clinical Assessments
Med History
View Change History
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 stepid
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 :: 1260 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
Query daysrz Integer Recommended days since randomization
Query admitday Integer Recommended admission days from randomization
Query admithr Integer Recommended admission hour
Query admitmin Integer Recommended admission minutes
Query delivday Integer Recommended delivery days from randomization
Query delivhr Integer Recommended delivery hour
Query delivmin Integer Recommended delivery minute
Query ldnb_longl Float Recommended How long was the birth mothers labor (hours) laborlen
Query babysex Integer Recommended Child's biological sex 1;2 1=Male; 2=Female
Query info_gest String 50 Recommended No. Weeks Gestation (G.A.) gestage
Query gestassm Integer Recommended gestational age assessed 1::3 1=Dubowitz; 2=Date of last menstrual period; 3=Ultrasound
info_apgar1 String 50 Recommended Apgars 1 min. apgar1
info_apgar5 String 50 Recommended Apgars 5 min. apgar5
Query ldnb_wtbirthp Float Recommended How much did this baby weigh at birth (pounds) babylbs
Query ldnb_wtbirtho Float Recommended How much did this baby weigh at birth (ounces) babyoz
Query ldnb_lgthin Float Recommended What was the babys length at birth(inches) -1 = Not known babylen
Query laborons Integer Recommended labor onset 1::3 1=Natural; 2=Induced; 3=None (c-section)
Query preg_mode_deliv String 225 Required What was the mode of delivery? 999=DK/NA delivtyp
Query complica Integer Recommended complications labor delivery 0;1;-7 0=No; 1=Yes; -7=Refused
Query site String 101 Recommended Site Study Site site_id, siteid
Query certcode Integer Recommended stepbd certification code
birthout_mecon Integer Recommended Meconium drug screen: Positive? 0;1;9 0 = No; 1 = Yes; 9 = Unknown
birthout_chorio Integer Recommended Chorioamnionitis diagnosis? 0;1;9 0 = No; 1 = Yes; 9 = Unknown
birthout_infadm Integer Recommended NICU admission? 0;1;9 0 = No; 1 = Yes; 9 = Unknown
birthout_dofpa String 20 Recommended Date of first prenatal appointment
birthout_prenapp Integer Recommended Total number of prenatal appointments attended
birthweight_g Float Recommended birth weight in grams NA=Missing
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.