Formaldehyde Vapor Concentration in Electronic Cigarettes and Health Complaints of Electronic Cigarettes Smokers in Indonesia

Table 1

Characteristics of cigarette smoker in personal vapor community in Surabaya city in 2016.

Age (years)	Percentage ()
18	12.0
19	20.0
20	16.0
Age (years)	Percentage ()
21	8.0
22	8.0
23	8.0
24	12.0
25	12.0

Source: primary data.