berkeley {bsitar}R Documentation

Berkeley Child Guidance Study Data

Description

Longitudinal growth records for 136 children.

Usage

berkeley

Format

A data frame with 4884 observations on the following 10 variables:

id

Factor variable with levels 201-278 for males and 301-385 for females.

age

Age in years (numeric vector).

height

Height in cm (numeric vector).

weight

Weight in kg (numeric vector).

stem.length

Stem length in cm (numeric vector).

bi.acromial

Biacromial diameter in cm (numeric vector).

bi.iliac

Bi-iliac diameter in cm (numeric vector).

leg.circ

Leg circumference in cm (numeric vector).

strength

Dynamometric strength in pounds (numeric vector).

sex

Factor variable with level 1 for male and level 2 for female.

Details

The data was originally included as an appendix in the book Physical Growth of California Boys and Girls from Birth to Eighteen Years authored by Tuddenham and Snyder (1954). The dataset was later used as an example in the sitar (Cole 2022) package after correcting transcription errors.

A more detailed description, including the frequency of measurements per year, is provided in the sitar package (Cole 2022). Briefly, the data consists of repeated growth measurements made on 66 boys and 70 girls (ages 0 to 21). The children were born in 1928-29 in Berkeley, California, and were of northern European ancestry. Measurements were taken at the following ages:

The data includes measurements for height, weight (undressed), stem length, biacromial diameter, bi-iliac diameter, leg circumference, and dynamometric strength.

Value

A data frame with 10 columns.

Author(s)

Satpal Sandhu satpal.sandhu@bristol.ac.uk

References

Cole T (2022). sitar: Super Imposition by Translation and Rotation Growth Curve Analysis. R package version 1.3.0, https://CRAN.R-project.org/package=sitar.

Tuddenham RD, Snyder MM (1954). “Physical growth of California boys and girls from birth to eighteen years.” Publications in Child Development. University of California, Berkeley, 1(2), 183–364. https://pubmed.ncbi.nlm.nih.gov/13217130/.


[Package bsitar version 0.3.2 Index]