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A Comprehensive Index for the Modeling of Smoking History in Periodontal Research

Th. Dietrich1,2,3,4,*, and K. Hoffmann1

1 Dept. of Epidemiology, German Institute of Human Nutrition, Nuthetal, Germany;
2 Dept. of Periodontology and
3 Dept. of Oral Surgery, Charité, Humboldt University of Berlin, Berlin, Germany; and
4 Dept. of Health Policy & Health Services Research, Goldman School of Dental Medicine, Boston University, 715 Albany St., 560 3rd floor, Boston, MA 02118, USA;



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  		Figure. Smoothed quantile plot of log-transformed CSI for former smokers (solid line) and different categories of current smokers [0–10 cig/day (long dashes), 11–20 cig/day (medium dashes), 21–30 cig/day (short dashes), and > 30 cig/day (dots)].

 




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Journal of Dental Research ® Critical Reviews (1990-2004)
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