Subjects who completed the study (n = 203) | Subjects lost to follow up (n = 83) | |||||
---|---|---|---|---|---|---|
n | % | 95% CI | n | % | 95% CI | |
*One subject who dropped out of the study did not complete questionnaire at baseline. | ||||||
†Present in the last 12 months at the time of the interview. | ||||||
‡Presence of at least two positive answers to questions about wheezing, chest tightness, shortness of breath, or cough under usual conditions or under such conditions as exercise, exposure to cold air, strong odours, smoke, and dusts. | ||||||
§Physician confirmed as reported by subject. | ||||||
¶Present if one of mother, father, or sister/brother has asthma. | ||||||
**Present in the case of a history of eczema, urticaria, or hayfever. | ||||||
††Presence of at least two immediate reactions to a battery of 11 common inhalants. | ||||||
‡‡Presence of at least one of runny or stuffy nose, attack of sneezing, or itchy eyes. | ||||||
§§Presence of at least one of cough for several minutes, wheezing, chest tightness, shortness of breath, or waking up at night due to these symptoms. | ||||||
Wheezing† | 45 | 22.2 | 18.5 to 26.9 | 19 | 23.2 | 20.8 to 29.5 |
Chest tightness† | 16 | 7.9 | 5.5 to 11.1 | 9 | 11.0 | 8.1 to 14.5 |
Shortness of breath† | 18 | 8.9 | 6.4 to 12.3 | 8 | 9.8 | 7.0 to 13.1 |
Cough† | 15 | 7.4 | 5.1 to 10.5 | 7 | 8.5 | 6.1 to 11.7 |
Phlegm† | 32 | 15.8 | 11.7 to 18.9 | 23 | 28.0 | 23.2 to 32.2 |
Symptoms of non-welding related asthma‡ | 33 | 16.3 | 13.9 to 21.6 | 21 | 25.6 | 20.8 to 29.6 |
Asthma§ | 35 | 17.4 | 13.9 to 21.6 | 11 | 13.4 | 11.7 to 18.9 |
Familial asthma¶ | 36 | 17.7 | 16.2 to 24.3 | 20 | 24.4 | 20.8 to 29.6 |
Personal atopic history** | 80 | 39.8 | 35.2 to 45.0 | 22 | 26.8 | 23.2 to 32.2 |
Atopy†† | 96 | 47.3 | 42.5 to 52.5 | 36 | 44.4 | 40.1 to 50.0 |
Rhinitis with pets‡‡ | 76 | 37.4 | 32.8 to 42.5 | 18 | 22.0 | 18.5 to 26.9 |
Rhinitis in pollen season‡‡ | 66 | 32.5 | 27.9 to 37.3 | 18 | 22.0 | 18.5 to 26.9 |
Respiratory symptoms with pets§§ | 29 | 14.3 | 11.7 to 18.9 | 5 | 6.1 | 4.1 to 9.1 |
Respiratory symptoms in pollen season§§ | 15 | 7.4 | 5.1 to 10.5 | 4 | 4.9 | 3.1 to 7.6 |