dental {GLMsData}

Decayed, missing and filled teeth

Description

The data give the estimates of the mean number of decayed, missing and filled teeth (DMFT) at age 12 years, and the mean annual sugar consumption in the previous five years for 90 countries

Usage

data(dental)

Format

A data frame with 90 observations on the following 4 variables.

Country

the country; a factor

Indus

whether the country is considered an industrialized country; a factor with levels Ind (industrialized) or NonInd (not industrialized)

Sugar

the mean annual sugar consumption in kilograms per person per year, computed over the five years (or as much as available) prior to the survey; a numeric vector

DMFT

estimates of the mean number of decayed, missing and filled teeth at age 12; a numeric vector

Details

The data give the estimates of the mean number of decayed, missing and filled teeth (DMFT) at age 12 years, and the mean annual sugar consumption in the previous five years for 90 countries. For some countries, data on sugar consumption was unavailable for the previous five years, and the average was computed for the available data; see Woodward and Walker (1994) for details.

Source

M. Woodward and A. R. P. Walker (1994) Sugar consumption and dental caries: evidence from 90 countries. British Dental Journal, 176, 297–302.

References

M. Woodward (2004) Epidemiology: Study Design and Data Analysis, second edition. Chapman and Hall.

Examples

data(dental)
plot(DMFT ~ Sugar, data=dental )