Aims: To determine the prevalence of asthma, asthma-like symptoms and allergic diseases among adults 30-49 years of age in regions of Bolu.
Materials and methods: A questionnaire was given to families of students in schools in different areas of Bolu, Turkey. The European Community Respiratory Health Survey (ECRHS) and a questionnaire, including questions about the socioeconomic status and demographic characteristics of the participants, were responded to by 1403 people.
Results: The prevalence of symptoms and diseases were as follows: wheezing in the last year 12.0% (n=168), asthma 8.7% (n=121), doctor-diagnosed asthma 3.6% (n=50), currently taking drugs for asthma 1.2% (n=17), allergic rhinitis 16.5% (n=230), and eczema 9.6% (n=134). The risk factors for each symptom or disease were as follows: for wheezing: smoking in the house (odds ratio [OR]=2.43 and 95% Confidence Limits [95%CL]=1.53-3.86), living in a non-concrete building (OR=2.17, 95%CL=1.27-3.69); for asthma: mold in the house (OR=1.70, 95% CL=1.05-2.76), living in a shanty (OR=2.76, 95%CL=1.30-5.85), smoking in the house (OR=1.51, 95%CL=1.02-2.22); for allergic rhinitis: being female (OR=1.55, 95%CL=1.08-2.24), living in a shanty (OR=5.81, 95%CL=2.06-16.39), a monthly income below $300 (OR = 1.74, 95%CL=1.13-2.69).
Conclusions: A high rate of undiagnosed and untreated people with asthma among adults 30-49 years of age is present in Bolu. Especially, while a low socioeconomic level was observed to increase the risk of asthma and allergic rhinitis, risk of wheeze and asthma was found to be elevated by smoking in house.