| berkeley {bsitar} | R Documentation |
Berkeley Child Guidance Study Data
Description
Data provide longitudinal growth records for 136 children.
Usage
berkeley
Format
A data frame with 4884 observations on the following 10 variables:
- id
factor with levels 201-278 for males, and 301-385 for females
- age
years, numeric vector
- height
cm, numeric vector
- weight
kg, numeric vector
- stem.length
cm, numeric vector
- bi.acromial
cm, numeric vector
- bi.iliac
cm, numeric vector
- leg.circ
cm, numeric vector
- strength
lb, numeric vector
- sex
factor with level 1 male and level 2 female
Details
Data 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), and later used as an example dataset in the sitar (Cole 2022) package after correcting for the transcription errors.
A detailed description of the data including the frequency of measurements per year is provided in the sitar package. (Cole 2022). Briefly, the data comprise of repeated growth measurements made on 66 boys and 70 girls (birth to 21 years). Children were born in 1928-29 (Berkeley, California) and were of north European ancestry. Measurements were made at the following ages: 0 (i.e, at birth), 0.085 year, 0.25 to 2 years (every 3 month), 2 to 8 years (annually), and 8 to 21 years (6-monthly). The children were measured for height, weight (undressed), stem length, biacromial diameter, bi-iliac diameter, leg circumference, and dynamo metric 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/.