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Several studies highlighted a great variability, both between and within countries, in the prevalence of asthma and chronic airways diseases.To evaluate if geo-climatic variations can explain the heterogeneity in the prevalence of asthma and respiratory diseases in Italy.Between 2006 and 2010, a postal screening questionnaire on respiratory health was administered to 18,357 randomly selected subjects,...
Background No study has been carried out on the time trend in the prevalence of chronic bronchitis (CB) in recent years, despite its clinical and epidemiological relevance. We evaluated the trend in CB prevalence during the past decade among young Italian adults. Methods A screening questionnaire was mailed to general population samples of 20–44 year-old subjects in two cross-sectional surveys:...
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