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American Journal of Epidemiology Advance Access originally published online on May 11, 2009
American Journal of Epidemiology 2009 169(12):1531-1532; doi:10.1093/aje/kwp099
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American Journal of Epidemiology © The Author 2009. Published by the Johns Hopkins Bloomberg School of Public Health. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org.

LETTERS TO THE EDITOR

TWO AUTHORS REPLY

Moon-Woo Seong and Do-Hoon Lee

From the Department of Laboratory Medicine, National Cancer Center, Goyang, Gyeonggi 410-769, Korea

(e-mail: dhlee@ncc.re.kr)

The first 10% of the full text of this article appears below.

We thank Stang (1) for his comments on our paper (2). Stang raised concerns about the following aspects of our study: highly skewed data distribution, quantitative evaluation of data, and the possibility of misclassification of study subjects.

As Stang noted in his letter, our data on hair nicotine concentration had a highly skewed distribution. Because our data were still skewed in distribution after logarithmic transformation, we approached our data with a more . . . [Full Text of this Article]


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