Is the association between asthma and rhinitis stable over time despite diverging trends in prevalence?
The association of rhinitis with asthma was stable between 1990 and 2008. The pattern in the time trends of asthma outcomes strongly suggests that decreased smoking counterbalanced the driving effect of increased rhinitis on asthma prevalence. The findings illustrate the public health benefits of decreased smoking.
The distribution patterns of alcohol consumption in African countries are consistent with those observed previously in industrialized countries. These findings seem to counter Skog's theory of collective drinking behaviour and support the universality of the observation that the prevalence of problem drinking is linked closely to mean consumption.