Daily/regular use was reported in 12 studies. The range of prevalence was 2.0%�C71.5%, and the calculated weighted find more mean prevalence was 7.2% in 11 studies. Participants in one study were all daily/regular users (Cigrang, Severson, & Peterson, 2002); they were excluded from the range and weighted mean prevalence calculations. Occasional use was reported in five studies; the range of prevalence was 1.2%�C8.8%. The calculated weighted mean prevalence was 4%. Experimental use was reported in eight studies; the range of prevalence was 6.6%�C24.7%. The calculated weighted mean prevalence was 14.4%. Lifetime use was reported in four studies; the range of prevalence was 7.9%�C43.1%. The calculated weighted mean prevalence was 24.9%. Former use was reported in nine studies; the range of prevalence was 0.
2%�C30.6%. The calculated weighted mean prevalence was 3.6%. Concurrent use of cigarettes and ST was reported in 19 studies and was categorized in one of three ways: (a) ST users who also smoke cigarettes, (b) cigarette smokers who also use ST, or (c) individuals who use both (primary tobacco product not identified). Concurrent use, defined as ST users who also smoke cigarettes, was reported in seven studies; the range of prevalence was 7.0%�C64.4%. The calculated weighted mean prevalence was 47.3%. Concurrent use, defined as cigarette smokers who also use ST, was reported in five studies; the range of prevalence was 4.5%�C41.8%. The calculated weighted mean prevalence was 18.3%. Concurrent use, defined as individuals who use both tobacco products, was reported in six studies; the range of prevalence was 4.
8%�C68.6%. The calculated weighted mean prevalence was 39.4%. Of these 19 studies, 9 reported the gender of concurrent users; the majority were male. One study compared ST use of daily light cigarette smokers versus intermittent cigarette smokers (Cooper et al., 2010). Relative to daily light smokers, intermittent smokers were more likely to use ST daily and occasionally (7% vs. 2%; 7% vs. 5%). Relative to intermittent smokers, daily light smokers used ST more experimentally (24% vs. 22%). Klesges et al. (2006) reported cigarette smokers�� daily, experimental, and former ST use for the smoking intervention group. In this group, 14.3% were daily ST users, 24.7% were experimental users, and 5.7% were former users.
Specific Characteristics of the ST User Population Other Demographics Four studies reported the marital status of ST users, with mixed findings. Two studies found that the majority of users were married (Peterson et al., 2007; Severson et al., 2009), Anacetrapib while the majority of users in the other two studies were single (Ebbert et al., 2006; Haddock et al., 2001). One study reported the hometown population size of snuff (i.e., ground tobacco leaves) and chew (i.e., crushed tobacco leaves) users (Daly & Pierson, 1990). More snuff users (41.7%) came from a hometown of less than 25,000 people than from any other population size category.