juul {ISwR}R Documentation

Juul's IGF data

Description

The juul data frame has 1339 rows and 6 columns. It contains a reference sample of the distribution of insulin-like growth factor (IGF-I), one observation per subject in various ages, with the bulk of the data collected in connection with school physical examinations.

Usage

juul

Format

This data frame contains the following columns:

age
a numeric vector (years).
menarche
a numeric vector. Has menarche occurred (code 1: no, 2: yes)?
sex
a numeric vector (1: boy, 2: girl).
igf1
a numeric vector, insulin-like growth factor (microgram per liter).
tanner
a numeric vector, codes 1–5: Stages of puberty ad modum Tanner.
testvol
a numeric vector, testicular volume (ml).

Source

Original data.

Examples

plot(igf1~age, data=juul)

[Package ISwR version 2.0-5 Index]