Approximately 300 million people around the world currently have<unk>  and the number is estimated to increase by additional 100 million by the year 2025. Prevalence of<unk>  is high among children and females in industrialized nations. International Study of<unk>  and Allergies in Childhood (ISAAC), which measured the global prevalence and severity of<unk>  symptoms in children, demonstrated that the high rates of<unk>  were noted in countries whose predominant language is English. Puerto Rican people have the highest prevalence of<unk>  in USA.<unk>  accounts for 217,000 emergency room visits and 10.5 million physician office visits every year.
Asthma epidemiology and demographics
Chronic bronchitis epidemiology and demographics
Acute bronchitis epidemiology and demographics
Dyspnea epidemiology and demographics
Pneumoconiosis epidemiology and demographics
Bronchiolitis epidemiology and demographics
Bronchiectasis epidemiology and demographics
Nocturnal asthma epidemiology and demographics