The interplay between brain, behavior, and cognition from childhood to adulthood

Data Dictionary

Your data files must contain all columns. The column names, measure coding, data ranges, and distributions (where specified) must adhere to the below criteria before we merge your pull request into our main branch.

Number of subjects: 10,000
Number of rows: 70,000

Notes:

  • When Required == True in the dictionary below, each row must have an entry in this column.
    That is, there can be no missing data.
  • Each group should decide the effect size and amount of noise they would like to include
  • Missing values should be coded as NA

Quality control criteria for entire data file

  • All columns are present and named appropriately
  • Less than 20% missingness

Individual data file measures:

Subject ID

  • Column name: subject_id
  • Data type: String
  • Measure type: Demographic
  • Required: True
  • Time varying: False
  • Quality control criteria:
    • All rows contain non-NA values

Site ID

  • Column name: site_id
  • Data type: String
  • Measure type: Demographic
  • Required: True
  • Time varying: False
  • Quality control criteria:
    • All rows contain non-NA values
  • Notes:
    Site ID should be made up and team/researchers who created the data should not be idenifiable

Age

  • Column name: age
  • Data type: Integer
  • Measure type: Demographic
  • Units: Months
  • Required: False
  • Time varying: True
  • Quality control criteria:
    • Less that 20% missingness
    • All entries are between 60 and 276 months
    • brain_behavior_measurement_date - dob = age
  • Notes:
    Age in months at the time of the interview/test/sampling/imaging. 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

  • Column name: sex
  • Data type: Integer
  • Measure type: Demographic
  • Required: True
  • Time varying: False
  • Levels:
    • 0: Male
    • 1: Female
  • Quality control criteria:
    • All rows contain non-NA values
    • All entries are either 0 or 1
  • Notes:
    Sex of subject assigned at birth

Date of birth

  • Column name: dob
  • Data type: Datetime
  • Measure type: Demographic
  • Required: True
  • Time varying: False
  • Quality control criteria:
    • All rows contain non-NA values
    • All entries are in ISO8601 format, which is YYYY-MM-DD

Measurement date

  • Column name: brain_behavior_measurement_date
  • Data type: Datetime
  • Measure type: Demographic
  • Required: False
  • Time varying: True
  • Quality control criteria:
    • All rows contain non-NA values
    • All entries are in ISO8601 format, which is YYYY-MM-DD

Waves / Number of time-points

  • Column name: wave_number
  • Data type: Integer
  • Measure type: Demographic
  • Required: True
  • Time varying: True
  • Levels:
    • [1, 2, 3, 4, 5, 6, 7]
  • Quality control criteria:
    • All rows contain non-NA values
    • All entries adhere to the appropriate levels
  • Notes: Number of time-points per subject: 7 (about every two years)

Parental education

  • Column name: parental_education
  • Data type: Integer
  • Measure type: Demographic
  • Required: False
  • Time varying: True
  • Levels:
    • 0: Less than 12th grade (about 5.3% of sample)
    • 1: High school or GED (about 35.4% of sample)
    • 2: Bachelor’s degree (about 25.3% of sample)
    • 3: Master’s or higher degree (about 34% of sample)
    • 777: Refused to answer
  • Quality control criteria:
    • Less that 20% missingness
    • All entries adhere to the appropriate levels

Autism Diagnosis

  • Column name: autism_diagnosis
  • Data type: Integer
  • Measure type: Clinical
  • Required: False
  • Time varying: False
  • Levels:
    • 0: No
    • 1: Yes
  • Quality control criteria:
    • Less that 20% missingness
    • All entries adhere to the appropriate levels

Full scale IQ

  • Column name: iq
  • Data type: Integer
  • Measure type: Cognitive
  • Required: False
  • Time varying: True
  • Quality control criteria:
    • Less that 20% missingness
    • All entries are positive integers less than 200
  • Notes:
    IQ score, general population mean 100, sd 15

Child Behavior Checklist externalizing raw score

  • Column name: cbcl_externalizing_raw_score
  • Data type: Integer
  • Measure type: Behavior
  • Required: False
  • Time varying: True
  • Quality control criteria:
    • Less that 20% missingness
    • All entries are between 0 and 70
  • Notes:
    Sum of scores for externalizing section of CBCL

Child Behavior Checklist internalizing raw score

  • Column name: cbcl_internalizing_raw_score
  • Data type: Integer
  • Measure type: Behavior
  • Required: False
  • Time varying: True
  • Quality control criteria:
    • Less that 20% missingness
    • All entries are between 0 and 64
  • Notes:
    Sum of scores for internalizing section of CBCL

Child Behavior Checklist attention problems raw score

  • Column name: cbcl_attentionproblem_raw_score
  • Data type: Integer
  • Measure type: Behavior
  • Required: False
  • Time varying: True
  • Quality control criteria:
    • Less that 20% missingness
    • All entries are between 0 and 20
  • Notes:
    Sum of scores for attention problem section of CBCL

Grey matter volume

  • Column name: gm_volume
  • Data type: Integer
  • Measure type: Brain
  • Required: False
  • Time varying: True
  • Quality control criteria:
    • Less that 20% missingness
    • All entries are positive and less than 1,000,000 mm^3

White matter volume

  • Column name: wm_volume
  • Data type: Integer
  • Measure type: Brain
  • Required: False
  • Time varying: True
  • Quality control criteria:
    • Less that 20% missingness
    • All entries are positive and less than 1,000,000 mm^3

Hippocampal volume

  • Column name: hippo_volume
  • Data type: Integer
  • Measure type: Brain
  • Required: False
  • Time varying: True
  • Quality control criteria:
    • Less that 20% missingness
    • All entries are positive and less than 20,000 mm^3

Amygdala volume

  • Column name: amygdala_volume
  • Data type: Integer
  • Measure type: Brain
  • Required: False
  • Time varying: True
  • Quality control criteria:
    • Less that 20% missingness
    • All entries are positive and less than 10,000 mm^3

Cortical thickness of frontal lobe

  • Column name: frontal_lobe_gm_thickness
  • Data type: Integer
  • Measure type: Brain
  • Required: False
  • Time varying: True
  • Quality control criteria:
    • Less that 20% missingness
    • All entries are positive and less than 5 mm

Intracranial volume

  • Column name: icv
  • Data type: Integer
  • Measure type: Brain
  • Required: False
  • Time varying: True
  • Quality control criteria:
    • Less that 20% missingness
    • All entries are positive and less than 5,000,000 mm^3

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