VGAMdata (version 1.0-0)

belcap: BELCAP Dental Data

Description

A prospective data set containing the DMFT index of children in Belo Horizonte at the beginning and end of the BELCAP study.

Usage

data(belcap)

source

http://onlinelibrary.wiley.com contains the data file (a supplement of the JRSSA article). Downloaded in January 2014 and formatted into R by J. T. Gray, [e-mail].

Details

This data set is from the Belo Horizonte Caries Prevention (BELCAP) study. The data is collected from children in Belo Horizonte (Brazil) aged seven years at the start of the study. In in order to determine which method(s) were best for preventing tooth decay, six treatments were randomized to six separate schools. The measure used is the decayed, missing and filled teeth (DMFT) index - a well known and important measure of a persons dental health. Only the eight deciduous molars are considered, so the lowest value is 0, and the highest is 8.

References

Bohning, D., D. Ekkehart, P. Schlattmann, L. Mendonca, and U. Kircher (1999). The Zero-Inflated Poisson Model and the Decayed, Missing and Filled Teeth Index in Dental Epidemiology, Journal of the Royal Statistical Society, A 162(2), 195--209.

Examples

data(belcap)
## maybe str(belcap) ; plot(belcap) ...