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Journal of Dental Research
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*Smoking
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Bias Induced by Self-reported Smoking on Periodontitis-Systemic Disease Associations

C.F. Spiekerman1,*, P.P. Hujoel1,2 and T.A. DeRouen1,3

1 Department of Dental Public Health Sciences, Box 357475, University of Washington School of Dentistry, Seattle, WA 98195;
2 Department of Epidemiology, University of Washington School of Public Health;
3 Department of Biostatistics, University of Washington School of Public Health;


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  		Figure. Partial regression plot of 1507 current smokers in the NHANES III study, depicting the linear association remaining between mean attachment loss and serum cotinine after adjustment for log of self-reported cigarettes smoked per day, age, age squared, race (white, other), and gender.

 

Journal of Dental Research, Vol. 82, No. 5, 345-349 (2003)
DOI: 10.1177/154405910308200504
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