Table 4.

Types of participants targeted by SNS.

Reference	Study ID	Participant type	Target age, years
[13]	Heather, 2009	Pregnant women	>18
[12]	Fenner, 2012	Female	16-25
[16]	Lohse, 2013	Female	18-45
[18]	Shindel, 2012	WSW	>18
[21]	Strasser, 2012	MSM	No targeted age
[11]	Levine, 2011	Youth	16-24
[17]	Lord, 2011	Youth	18-25
[15]	Ramo, 2012	Young smokers	18-25
[14]	Woolley, 2012	Community	>18
[19]	Cucchetti, 2012	Community	No targeted age