“…However, in addition to preventing smoking in general, reducing socioeconomic inequalities in smoking is another key target of antismoking policies. Previous studies have shown that socioeconomic differences in smoking are large and have widened, particularly among women (Cavelaars et al, 2000;Laaksonen et al, 2002;Peto, Lopez, Boreham, Thun, & Heath, 1994;Pierce, 1989;Pierce, Fiore, Novotny, Hatziandreu, & Davis, 1989;Rahkonen, Berg, & Puska, 1995). Given that smoking cessation is often more common in higher socioeconomic groups, the overall positive trend will widen rather than narrow the socioeconomic gap.…”