Version: BR 30.0🔗

Participants

5,467

Total Visits

16,853

V01: 4,672
V02: 3,820
V03: 2,792
V04: 1,909
V05: 1,784
V06: 686
V07: 587
V07a: 603

By Sex

848 Unknown [V01]

2,568 F [V02+]

2,051 M [V02+]

BR30.0 Data Release Script Refactor & Issues - Please Read Carefully🔗

As the Data Release script has been refactored from the ground up, there are a few general features yet to be fine-tuned and some known caveats for this first 3.0 BR release that will be addressed for the upcoming BR30.1 run. A non-exhaustive list is provided below and we encourage any additional feedback or observations. Please reach out if there any questions.

Shadow Matrix:
- Shadow Matrix notes for blank fields to be further fine-tuned for proper display of hierarchical missingnness reasons
- Gestational age and candidate age notes need to be updated so that the appropriate note is displayed when values are not available
Static & Dynamic tables (replaces Basic Demographics and Visit Data tables):
- No forward override implemented for values on dynamic table (i.e. carrying the last known value forward to subsequent visits)
- Rollover SU flags cumulative feature not present in BR30.0
Anthropometrics
- ‘Weight for Length’ Z-score fields include notes (to be moved to separate field for BR30.1)
- Notes on Shadow Matrix for SGA flags to be updated
MRI Data Summary form
- Scan sequence (mri_ra_chkl_data_scn_002) not included due to issue with associated Levels configuration (to be addressed and included for BR30.1)

BR30.0 Resolved Issues & Updates🔗

= Known Issue = Pending Update

Table/Topic	Summary
Behavior & Child-Caregiver Interaction
ECHO	Addition of the Early Child Care and Education
ERICA	Remove `locomotor_ability` fields from both tables
MAPS-EASI	Addition of the MAPS-EASI- Toddler
MAPS-TL (Tod)	Pro-rated scoring for `mh_cg_mapdb__tod` not yet implemented; N=16 participants missing scores.
MCHAT	Addition of the Modified Checklist for Autism in Toddlers
Demographics
Basic Demo	The `screen_race_multi__*` variables are almost entirely coded as '0' and should not be used for analysis. Users interested in race and ethnicity information should instead use the corresponding derived ACS race and ethnicity variable. Values will be corrected in a future release.
Static & Dynamic Tables	The Demographics domain includes 2 tables with derived information grouped into visit-specific data (Visit Info) and general demographics (Basic Demographics). In a future release, these tables will be restructured to instead organize variables as either longitudinal (dynamic measures that change over time) or global (static measures, such as sex assigned at birth and race/ethnicity).
EEG
MADE v1.7.0	HBCD-MADE derivatives processed through updated version v1.7.0
General
Implausible GA	A small subset of participants have implausible `gestational_age` (V01 only) values for one or more instrument. Until corrected, review GA distribution to exclude outliers from analysis (should be positive and generally < 45 weeks).
Blank Fields for Siblings	Family-level (i.e., non-child-specific) instrument fields are currently populated only for the Main Child and not sibling records (e.g., HBCD Multiple Birth – Sibling). Until resolved, users should obtain family-level values for sibling participants by referencing the corresponding Main Child values (see mapping between Multibirth participants IDs in the HBCD Private Release Notes).
Neurocognition & Language
CDI-2	Addition of the MacArthur-Bates CDI-2 Language
Deferred Imitation	Addition of instrument: Deferred Imitation Task: Gong and Berry-Go-Round
Novel Tech & Wearable Sensors
GABI	Addition of raw BIDS data for GABI (infant heart rate).
Physical Health
Anthropometrics	Add sex-specific birth weight to `ph_ch_anthro` (see Sex-Specific Birthweight for GA).
Child Nutrition	Addition of the Child Nutrition Questionnaire.
Med History V1	Addition of V06
PEDsQL	Addition of the PEDsQL
Social & Environmental Determinants
Demo	Addition of V6 Adult
Demo	Addition of V6 Child
Incarceration	Addition of the Incarceration Questionnaire