Welders (n=97) | Metal workers (n=125) | Office workers (n=29) | Total (n=251) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
n | % | n | % | n | % | n | % | ||||||||
Chronic cough | 13 | 14 | 7 | 6 | 0 | 0 | 20 | 8 | |||||||
Chronic sputum secretion | 12 | 13 | 7 | 6 | 3 | 11 | 22 | 9 | |||||||
Shortness of breath | 4 | 4 | 6 | 5 | 1 | 4 | 11 | 5 | |||||||
Ever wheezing | 22 | 23 | 17 | 14 | 5 | 17 | 44 | 18 | |||||||
Wheezing >1 week in the past 2 years | 12 | 13 | 6 | 5 | 4 | 14 | 22 | 9 | |||||||
Chest tightness | 11 | 12 | 3 | 3 | 2 | 7 | 16 | 7 | |||||||
Disorders according to questionnaire: | |||||||||||||||
Asthma | 17 | 18 | 11 | 9 | 4 | 14 | 32 | 13 | |||||||
Chronic obstructive pulmonary disease | 15 | 16 | 9 | 7 | 3 | 11 | 27 | 11 | |||||||
Chronic non-specific lung disease | 23 | 25 | 15 | 12 | 4 | 14 | 42 | 17 | |||||||
Airways allergy | 11 | 12 | 20 | 16 | 4 | 14 | 35 | 14 |