Page Last Updated: June 1, 2026

Version: BR15.0🔗

Release date: 2025-05-30

Features/General🔗

  • Parquet files for the BHV Shadow Matrices generated
  • BrainSwipes data included
  • Set blank entries in tsv files to 'Null' in the corresponding Parquet files for all BHV and BioSpecimen files
  • Removed gender and sex related fields for REDCap Demographics (sed_bm_demo)

MRI/EEG/BioSensors🔗

MRI/EEG🔗

Changed label for 'Gestational age' in scans/sessions.tsv from 'age_gestational' to 'age_adjusted'

BrainSwipes🔗

  • Updated and revised feedback data included
  • Filtered non valid sessions from BrainSwipes
  • Adjusted 'run_id' format to '01', '02', ... in parquet files to align with tsv files (BrainSwipes re-run)

BioSpecimens🔗

  • Added 'bm' (Birth Mother) as 'source' to all BioSpecimen fields
  • Removed invalid sessions from BioSpecimen files
  • Transformed '-999' code to corresponding note ("Please refer to corresponding categorical field for more details") in Shadow Matrix
  • Removed 'Nail Weight' field from 'Nail Type' file (Messy and not consistent in format)
  • Removed 'nail_type' in the 'bio_biosample_nails_results' (Redundant and did not provide any info)
  • Removed 'visit_timepoint' fields as levels did not align with input in fields
  • Removed text from 'nail weight' and push units (mg) to 'units' metadata
  • Changed data type for timestamps fields (BioSpecimens)
  • Changed incorrect metadata entry on Data Dictionary for 'Urine' field 'bio_c_crs_u_cat'

Basic Demographics🔗

Forced insert for visit missing on 'Basic Demographics' (sed_basic_demographics)

Data Dictionary🔗

  • Checked 'Integer' with decimal values. Converted to 'double' where necessary
  • Changed 'type_data' for TLFB fields from 'text' to 'numeric'
  • Changed 'type_var' for selected BrainSwipes from 'count' to 'administrative'
  • Changed 'type_data' for selected BrainSwipes from 'float' to 'double'
  • Set 'type_level' for selected BioSpecimen (n=5), Basic Demographics (n=3) and Visit Data (n=17) fields
  • Reviewed and adapted invalid dates: Changed format to align with expected format, including for timestamp fields
  • Changed date to timestamp in data_type metafield (end format = YYYY-MM-DD HH:mm:ss) for biospecimen.
  • Removed BrainSwipes collection_platform and loris_required metadata fields.

Shadow Matrices🔗

  • Added note to Shadow Matrices for GAA blanks at V02/V03
  • Pushed note on 'Height/Weight/Head Circumference to Shadow Matrix
  • Pushed note on '-999' code for BioSpecimens to Shadow Matrix

Database/Scoring:🔗

  • SU flags on TLFB based on TRUE/FALSE (instead of Yes/No)
  • Adjustments made to GAA (Gestational Age at Administration) for BioSpecimens and BHV tables
  • Update 'PTSD/Acute Stress' scoring to include prorated scoring scheme
  • Removed duplicate instrument name in fieldname (foodins_category)
  • Removed score fields and restored values for 'SPM-2'
  • Changed invalid date entry on one date:2023-0915 to 2023-09-15

Filters🔗

  • Removed 'nail_weight', 'nail_type' and 'visit_timepoint' fields from BioSpecimen fields (see above)
  • Removed score fields for 'SPM-2'
  • Removed gender and sex related fields for REDCap Demographics (sed_bm_demo)
  • Excluded Z-score fields for 'Height/Weight/Head Circumference' (ph_ch_anthro)

Counts🔗

  • Total number of participants queried from DB: 1,426
  • Total number of visits
    • All: 2,207
      • V01: 1,426
      • V02: 660
      • V03: 121
  • By Sex (V02/V03 visit done):
    • Female: 328
    • Male: 338

BR15 Resolved Known Issues🔗

⚠️ BioSpecimens: Transform '-999'🔗

The -999 code needed to be transformed to a note in shadow matrices. Relevant shadow matrices include: bio_biosample_nails_results, bio_biosample_nails_type, and bio_biosample_urine.

⚠️ Duplicate Rows for BioSpecimens🔗

Flagged cases had two visits (V01 & V02). Flagged duplicates labeled as 'ses-V02'. Team verified with MSI on de-identified files to confirm if both visits are incorrectly labeled as 'ses-V02' during de-identification.

⚠️ Height/Weight/Head Circumference missing 'Date of Administration' (~6 cases)🔗