berkeley: Berkeley Child Guidance Study Data
In bsitar: Bayesian Super Imposition by Translation and Rotation Growth Curve Analysis

berkeley

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 \insertCiteTuddenham1954;textualbsitar, and later used as an example dataset in the sitar \insertCiteR-sitarbsitar 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. \insertCiteR-sitarbsitar. 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.