R: Juul's IGF data, extended version

juul2 {ISwR} | R Documentation

## Juul's IGF data, extended version

### Description

The `juul2` data frame has 1339 rows and 8 columns; extended version of |juul|.

### Usage

    juul2

### Format

This data frame contains the following columns:

`age`

  a numeric vector (years).

`height`

  a numeric vector (cm).

`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).

`weight`

  a numeric vector, weight (kg).

### Source

Original data.

### Examples

    plot(igf1~age, data=juul2)

[Package ISwR version 2.0-7 Index]