Table 2.

Summary of key findings by construct.

Construct	Key findings
Attitudes towards e-cigarettes/e-cigarette use	Attitudes were mostly positive. Positive attitudes involved: the ability to use e-cigarettes to reduce/quit smoking or in places where smoking is not allowed lack of social stigma compared to conventional cigarettes perceived health benefits compared to conventional cigarettes Negative attitudes involved: dissatisfaction with using an e-cigarette as a replacement for conventional cigarettes social stigma associated with using an e-cigarette lack of comfort using the product in places where smoking was not allowed
Knowledge about e-cigarette ingredients	Lack of knowledge about the ingredients in e-cigarettes. Lack of knowledge of ingredients made e-cigarette users uneasy about using the products.
Knowledge/beliefs about health effects	Generally unaware of the health effects of e-cigarette use. Most believed e-cigarettes to be less harmful than conventional cigarettes.
Perceived social norms	Most had both friends who use and do not use e-cigarettes. Several reported their first time trying e-cigarettes was with friends. When used in place of conventional cigarettes, friends and family members were generally supportive of their e-cigarette use. A small number of adults felt friends and family members were wary of their use of the products.
Plans for future e-cigarette use	Many reported plans to continue using e-cigarettes in the future. Those using e-cigarettes to reduce or quit smoking reported plans to continue using the products over the next 1–5 years. Those using the products socially hoped to stop using e-cigarettes in the long-term.