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:
0 years (at birth),
0.085 years,
0.25 to 2 years (every 3 months),
2 to 8 years (annually),
8 to 21 years (every 6 months).
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/.