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PPT (2 MB) - Institute for Oral Health

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THE ERIE COUNTY STUDY<br />

Study Design<br />

1. Adults 25 to 74 years of age<br />

2. Equal numbers of each decade<br />

(25 to 34; 35 to 44; etc.)<br />

3. Individuals of various socio-<br />

economic classes included<br />

Grossi et al. 1997

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