In a survey of 1836 adult US smokers, when using a direct comparison measure, 22.1% reported snus was less harmful than were cigarettes. When asked indirectly (estimating the health risk of snus and cigarettes
American Journal of Public Health
Association between socioeconomic status and the development of asthma: Analyses of income trajectories
Using data on 2868 children born in the Western Australian Pregnancy Cohort (Raine) Study, the authors examined the association between changes in family socioeconomic status and childhood asthma.