Tobacco Smoke Exposure and Eustachian Tube Disorders in US Children and Adolescents.

To describe the association between active, environmental tobacco smoke (ETS) exposure and the prevalence of eustachian tube dysfunction (ETD) in the U.S. pediatric population.Cross-sectional.U.S. representative demographic and audiometric data from the National Health and Nutrition Examination Survey (NHANES);2005-2010.The study consisted of 2,977 children aged 12-19 years. ETD was defined as middle ear pressure <100mm H20. ETS was defined as non-active smoking in individuals with serum cotinine over the limit of detection (≥0.015 ng/mL) and