Orthodont {mdhglm}

Orthodontic Growth Data

Description

The orthodontic growth data (Pinheiro and Bates, 2000) contain the growth measurements of 27 children for 11 girls and 16 boys from age 8 until age 14. Every two years, the distance between the pituitary and the pterygomaxillary fissure was recorded at ages 8, 10, 12 and 14.

Usage

data("Orthodont")

Format

A data frame with 108 observations on the following 4 variables.

distance

distance between the pituitary and the pterygomaxillary fissure

age

age in year (8, 10, 12 and 14 for each subject)

Subject

subjects indenfier for 11 girs and 16 boys

Sex

Gender (Male and Female)

References

Pinheiro, J.C. and Bates, D. (2000). Mixed-Effects Models in S and S-PLUS. Springer, New York.