humanfat {GLMsData}

Human age and fatness

Description

The age and percent body fat for 18 adults

Usage

data(humanfat)

Format

A data frame with 18 observations on the following 4 variables.

Age

the age of the subject in completed years; a numeric vector

Percent.Fat

the body fat percentage; a numeric vector

Gender

the gender; a factor with levels F (females) or M (males)

BMI

the body mass index in metres per kilogram-squared; a numeric vector

Details

The data come from a study investigating a new method of measuring body composition. The body fat percentage, age and gender is given for 18 adults aged between 23 and 61. “Eighteen normal adult subjects were measured including four young males and 14 females (age 25 to 60 years). None of these subjects had chronic diseases, were taking medications, or had skeletal fractures indicative of osteoporosis” (Mazess et al. (1984), p. 835). The bmi is computed from the weights and heights given in the original source.

Source

R. B. Mazess, W. W. Peppler, and M. Gibbons (1984) Total body composition by dualphoton ({}^{153}Gd) absorptiometry. American Journal of Clinical Nutrition, 40, 834–839.

References

D. J. Hand, F. Daly, A. D. Lunn, K. J. McConway, and E. Ostrowski (1994) A Handbook of Small Data Sets, London: Chapman and Hall. Dataset 17.

Examples

data(humanfat)
summary(humanfat)