BACKGROUND--The prevalence of asthma and the use of asthma drugs is increasing
worldwide. Studies of the incidence of asthma are few but are of interest in finding factors …

Recent reports have suggested an increased asthma prevalence in the Nordic countries.
The prevalence of asthma and related symptoms from lower airways in Umea, Northern …

The aim was to estimate the incidence rate of adult-onset asthma in relation to age, sex,
smoking and occupational exposures. A random sample of 18,087 subjects aged 16–75 …

SETTING: Our knowledge about asthma incidence in an adult population is limited. The aim
of the present investigation was to estimate the incidence rate of adult-onset asthma in …

Objectives: Asthma prevalence is increasing in many countries. Some recent articles,
however, claim that this tendency is drawing to an end. Hence, the incidence of persistent …

BACKGROUND: The high and increasing prevalence of childhood asthma is a major public
health issue. Various risk factors have been proposed in local studies with different designs …

Methods Men and women aged 20-35 years were sampled from the general population
living in a defined area of central Copenhagen. The first examination took place from 1976 …

Background The increase in asthma prevalence until 1990 has been well described.
Thereafter, time trends are poorly known, due to the low number of high quality studies. The …

The prevalence of respiratory symptoms in 6,610 adults (3,372 men and 3,238 women); 35-
36, 50-51 and 65-66 yrs of age, living in selected areas of Norrbotten, northern Sweden …

In several countries it has been observed that there has been no further increase in the
prevalence of asthma. This study aimed to look at asthma prevalence in children during the …