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. 2020 Apr 24;25(1):e35–e40. doi: 10.1055/s-0039-3402495

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Fundação Otorrinolaringologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. ( https://creativecommons.org/licenses/by/4.0/ )

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License, which permits unrestricted reproduction and distribution, for non-commercial purposes only; and use and reproduction, but not distribution, of adapted material for non-commercial purposes only, provided the original work is properly cited.

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Fig. 3 — Comparison of the saccharin transit test among the five groups, classified by age range ≤ and > 50 years old (*: difference detected in Dunn post-hoc between the control and passive smokers ≤ 50 years old); STT: saccharin transport test; COPD: chronic obstructive pulmonary disease.