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. 2014 Apr 23;4(4):e004958. doi: 10.1136/bmjopen-2014-004958

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This is an Open Access article distributed in accordance with the terms of the Creative Commons Attribution (CC BY 3.0) license, which permits others to distribute, remix, adapt and build upon this work, for commercial use, provided the original work is properly cited. See: http://creativecommons.org/licenses/by/3.0/

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Smoking status percentages in The Health Improvement Network (THIN) and the Health Survey for England (HSE) 2008 by deprivation quintile. Index of Multiple Deprivation (IMD) 1 is the least deprived and IMD 5 is the most deprived. Darker bars represent the HSE 2008 and lighter bars represent THIN.