Merianos AL, et al. - Via this secondary analysis of data from 14,199 U.S. children 3–11 years old in the National Health and Nutrition Examination Survey 1999–2014, researchers focused on the variation in the prevalence of tobacco smoke exposure (TSE) during this time period in this age group. They also estimated the variations between sociodemographic freatures and TSE by two-year increases, as well as examined links between sociodemographics and TSE in 2013–2014. Findings revealed a decline in the prevalence of TSE, from 64.5% to 38.1%, during 1999–2014 (a relative reduction of 44.4%). Across all the sociodemographics, decline in TSE was found. They reported that the children who were non-Hispanic black, had low socioeconomic status, and lived in rented homes were more likely to be exposed and hence require targeted tobacco control efforts so that the existing TSE disparities in children, especially in these populations, could be reduced.