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J Dent Res 50(1): 101-104, 1971
© 1971 International and American Associations for Dental Research
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Relationship Between Smoking and Calculus Deposition

CHARLES J. KOWALSKI 1

1 University of Michigan School of Dentistry, Ann Arbor, Michigan 48104, USA

The chi-square test for association in contingency tables is often used to analyze data gathered during the course of dental/oral experimentation. A simple procedure that makes such analyses more useful is described, and the method is applied in a study of the relationship between smoking and calculus deposition.

Submitted on March 13, 1970






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