The flexmix Package - NexTag Supports Open Source Initiatives
The flexmix Package - NexTag Supports Open Source Initiatives
The flexmix Package - NexTag Supports Open Source Initiatives
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26 fabricfault<br />
Format<br />
Details<br />
<strong>Source</strong><br />
A data frame with 797 observations on the following 5 variables.<br />
End Number of decayed, missing or filled teeth at the end of the study.<br />
Begin Number of decayed, missing or filled teeth at the beginning of the study.<br />
Gender A factor with levels male and female.<br />
Ethnic A factor with levels brown, white and black.<br />
Treatment A factor with levels control, educ, enrich, rinse, hygiene and all.<br />
<strong>The</strong> aim of the caries prevention study was to compare four methods to prevent dental caries. Interventions<br />
were carried out according to the following scheme:<br />
control Control group<br />
educ Oral health education<br />
enrich Enrichment of the school diet with rice bran<br />
rinse Mouthwash with 0.2% sodium floride (NaF) solution<br />
hygiene Oral hygiene<br />
all All four methods together<br />
D. Boehning, E. Dietz, P. Schlattmann, L. Mendonca and U. Kirchner (1999): <strong>The</strong> zero-inflated<br />
Poisson model and the decayed, missing and filled teeth index in dental epidemiology. Journal of<br />
the Royal Statistical Society A 162(2), pages 195-209.<br />
Examples<br />
data("dmft")<br />
dmft.flx
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