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Smoking status

LR Laura J. Rosen
DR David A. Rier
RS Robert Schwartz
MT Michal Talitman
LZ Lior Zwanziger
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Smoking status referred to use of combustible cigarettes, and was originally asked using five categories (Regular smoker, Occasional smoker, Former regular smoker, Former occasional smoker, Never smoker). We recoded these to three categories (Current smoker, Former smoker, Never smoker).

Copyright and License information: The Author(s). ©2019
Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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