Version: BR14.5🔗

Release date: 2025-02-20

Data Dictionary🔗

• Removed Data Dictionary elements
  • 'collection_platform'
  • 'loris_required'
• Unexpected DD values
  • source:
    • BioSpecimen: Set to 'Biological Mother’
    • Basic Demographics: Set to 'Biological Mother', 'Child', 'Family Data' or 'n/a' where applicable
    • Visit Data: Set to 'Biological Mother' or 'n/a' where applicable
  • type_data:
    • 'string' modified to 'text’
  • type_level:
    • Remaining 'continuous' cases set to 'interval'
    • Remaining 'qualitative' cases set to 'nominal'
    • Replaced 'date' with 'ordinal'
    • Replaced ‘string’ with ‘nominal’
• Required DD values
  • 'Basic Demographics' fields (Mother Race/Race-multi)
    • 'study': set as 'Core'
    • 'domain': set 'Demographics'
    • 'source': set as 'Biological Mother'
    • 'type_var': set as 'item'
  • 'order_sort': Added for BioSpecimen data tables
  • 'label': Added for BioSpecimen and Basic Demographics fields
  • ‘type_data’:
    • 'Basic Demographics': Set to 'character', except ‘age’ set to ‘double’
    • BioSpecimen: Set on case by case basis
    • Visit Data: Set on case by case basis
• Categorical variables
  • MLDS, ASSIST and other selected 'categorical' fields
    • 'type_data': set as 'character'
    • 'type_level': set as 'nominal'

MRI/EEG/BioSensors🔗

• MRI:
  • Added FreeSurfer and M-CRIB-S source directories from Infant-fMRIPrep processing, included in the derivative structure
• EEG:
  • Removed EEG files corresponding to cases where there were formatting errors in the .set files (at the request of the EEG team)
  • Additional EEG metadata files that were previously filtered are now included

BR 14.5 Resolved Known Issues🔗

⚠️ Incorrect Data: Height/Weight/Head Circumference (ph_ch_anthro)🔗

Though the grand majority of Z-scores are within the range of -3 to 3, there appear to be several cases where there are values entered that are out of the established range as per the current validations (implemented on July 10, 2024):

• head for age boys z-score [-14, 18]
• head for age girls z-score [-25, 17,8]
• length for age boys z-score [-24, 8,7]
• length for age girl z-score [-17, 7,3]
• weight for age boys z-score [-5, 19]
• weight for age girls z-score [-4, 5]
• weight for length boys z-score [17,20]
• weight for length girl z-score [0, 19]

The validation ranges added were quite wide and still allow for some extreme values at some ages (since the validation needed to apply across all ages for the instrument). Nonetheless, some of the values observed are outside of these ranges, and these should have been filtered out. These extreme values lead to the out of range Z-scores observed above.

Current validation ranges for these fields are:
Length: Should be between 30 and 130 cms
Head Circumference: Should be between 25 and 55 cms
Weight: Should be between 0.5 and 30 Kgs

Based on the current validation ranges and depending on sex and age, we could see Z-scores in the following range:
Length: Approximately -8 to 40
Head Circumference: Approximately -6 to 16
Weight: Approximately -6 to 18

These extreme values should have been filtered out for BR14. We are currently checking to see why this occurred, and other cases may need to be reviewed as they may appear within the range set, but still be out of the expected range for the age and sex. It is suspected that a lot of cases could be an issue of unit conversion.

⚠️ Misalignment Between Fields in TSV and JSON sidecar🔗

Many fields that are in the TSVs don't align properly to the JSON sidecar, which leads to data being empty in the output. Errors with run-id are also present, however this is less important to have because these are parsed in a similar manner as participant and session.