compute_ph_p_dhx_birthweight: Compute "Developmental History [Parent]: Youth birth weight"

In ABCDscores: Summary Scores of the Adolescent Brain Cognitive Development (ABCD) Study

Compute "Developmental History [Parent]: Youth birth weight"

Description

Computes the summary score ph_p_dhx_birthweight Developmental History [Parent]: Youth birth weight

• Summarized variables:

  • ph_p_dhx_002__01

  • ph_p_dhx_002__02

• Excluded values:

  • 999

  • any value less than 0

• Notes:

  • Computed using only baseline (⁠ses-00A⁠) and four-year (⁠ses-04A⁠) data

  • The following transformations were made prior to computing the score:

    • if ph_p_dhx_002__01 < 2, set it to 2

    • if ph_p_dhx_002__01 > 15, set it to 15

    • if ph_p_dhx_002__02 > 15 / 16, set it to 15 / 16

  • The following decisions were made based on discordance between baseline and four-year data:

    • if discordance is <= 1, take baseline weight

    • if discordance is > 1 and baseline weight is > 4, take baseline weight

    • else if discordance is > 1, take four-year weight

    • else if baseline weight is missing, take four-year weight

    • else, take baseline weight

Usage

vars_ph_p_dhx_birthweight

compute_ph_p_dhx_birthweight(
  data,
  name = "ph_p_dhx_birthweight",
  combine = TRUE
)

Arguments

data	tbl. Data frame containing the columns to be summarized. NOTE: Only baseline and year 4 data has been used for this summary score.
name	character, Name of the new column to be created. Default is the name in description, but users can change it.
combine	logical, If TRUE, the summary score will be appended to the input data frame. If FALSE, the summary score will be returned as a separate data frame.

Format

vars_ph_p_dhx_birthweight is a character vector of all column names used to compute summary score of ph_p_dhx_birthweight.

Value

tbl. The input data frame with the summary score appended as a new column.

ABCDscores documentation built on Sept. 11, 2025, 5:08 p.m.