“…Even less is known about how interactions among tobacco control policies may impact smoking among population subgroups. Within the last 15 years, research has shown that statelevel tobacco control policies can have different impacts on subgroups, including those defined by gender, age, socioeconomic status (SES), ethnicity, [17][18][19][20][21] urbanicity, 22 and sexual orientation. 23,24 Although small clusters of studies are beginning to suggest, for example, that low-SES groups are particularly responsive to price, [18][19][20] and that youth and higher-SES and urban groups are particularly responsive to SFA laws, 19,23,25 in general more research is needed to confirm the individual and combined impact of tobacco control policies across and within groups.…”