Table 2

Prevalence of respiratory symptoms (n=4521)

Symptomsn*%
*Missing data for specific symptoms between 0 and 42 subjects.
†First attack of asthma at age <15 years.
‡First attack of asthma at age 15 years or older.
§Woken by an attack of shortness of breath in the last 12 months, or attack of asthma in the last 12 months, or current use of drugs for asthma.
¶Regular cough at least three months each year, or regularly bringing up phlegm at least three months each year.
**Respiratory problems caused by any job.
Wheezing in the last 12 months81918.1
Wheezing with breathlessness50311.1
Wheezing apart from colds4229.3
Ever asthma2706.0
Childhood onset asthma†431.0
Adult onset asthma‡1994.4
Current asthma§56812.6
Being woken by an attack of shortness of breath in the last 12 months49110.9
Attack of asthma in the last 12 months1072.4
Current use of drugs for asthma1523.4
Chronic bronchitis¶68515.2
Regular cough at least three months each year46810.4
Regularly bringing up phlegm at least three months each year3988.8
Both the above symptoms1814.0
Ever rhinitis162836.0
Work related symptoms**3898.6