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. 2019 Jan 27;13:1178221818822979. doi: 10.1177/1178221818822979

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© The Author(s) 2019

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 1. — Change in the FTND score related to the age group of participants. Average FTND scores are plotted in relation to the age groups. FTND indicates Fagerström Test for Nicotine Dependence.

***P < .001 compared with group 18 to 24; ⁺⁺⁺P < .001 compared with groups 18 to 24 and 25 to 34.