“…The Pierce measure ( Pierce et al, 1996 ) was initially developed to forecast cigarette smoking but has been adapted in various forms to predict initiation of ENDS ( Strong et al, 2015 , Bold et al, 2017 , Cheng et al, 2021 ). In this study we account for this measure of susceptibility and other variables associated with likelihood of ENDS initiation and sleep quality, including parental education ( Vu et al, 2020 ), household income ( Patel et al, (2021 ), availability of tobacco products in the home ( Bailey et al, 2022 ; ( Bouchard et al, 2018 ), prior use of tobacco, alcohol, and illicit substances ( Brake, 2019 ), school performance ( Nicksic and Barnes, 2019 ), experiences with anxiety and depression ( Green et al, 2018 , Jamieson et al, 2020 ), perceptions of ENDs harmfulness ( Tackett et al, 2021 , Strong et al, 2019 ), sensation seeking ( Case et al, 2017 , Carey et al, 2019 ), having friends that use ENDS ( Groom et al, 2021 ), exposure to ENDS promotions on social media ( Holtz et al, 2021 ), Body Mass Index (BMI) ( Moore et al, 2011 ) and physical activity ( Youngstedt, 2005 ).…”