Patterns and socioeconomic differences in secondhand exposure to cigarettes, e-cigarettes, and heated tobacco products at home in Hong Kong adolescents.

Although recent publications in youth have reported a decreasing trend in SHS from cigarettes at home 19 , 20 , we observed an unexpected increase in SH-CC inside the home (27.4%) compared with our previous report (23.6%) using 2010–2011 data 15 .

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