menarche {MASS} | R Documentation |

## Age of Menarche data

### Description

Proportions of female children at various ages during adolescence
who have reached menarche.

### Usage

menarche

### Format

This data frame contains the following columns:

`Age`

- Average age of the group. (The groups are reasonably age homogeneous.)
`Total`

- Total number of children in the group.
`Menarche`

- Number who have reached menarche.

### Source

Milicer, H. and Szczotka, F. (1966) Age at Menarche in Warsaw girls in
1965.
*Human Biology*
**38**, 199–203.

The data are also given in

Aranda-Ordaz, F.J. (1981)
On two families of transformations to additivity for binary response data.
*Biometrika*
**68**, 357–363.

### References

Venables, W. N. and Ripley, B. D. (2002)
*Modern Applied Statistics with S.* Fourth edition. Springer.

### Examples

mprob <- glm(cbind(Menarche, Total - Menarche) ~ Age,
binomial(link = probit), data = menarche)

[Package

*MASS* version 7.2-33

Index]