Childhood Asthma and Allergic Symptoms Associated with Residential Dampness and Undesirable Odors
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A cross-sectional study data about building dampness indicators and perceptions of undesirable odors and child’s asthma and allergy symptoms were collected by means of a questionnaire in the urban area of Harbin, China. A total of 2600 families with children 2–8 years old returned completed and effective surveys. The most frequently self-reported symptom was sneezing without cold or flu (41.8%); condensation on windowpanes (43.9%) was indication of high relative humidity indoor air combined with cold surfaces; residents were more unsatisfied with the smell in the air during the last three months than the newborn period. Perceived dampness was the important risk factor for children’s health outcomes during lifetime-ever and during the last 12 months. Most of the dampness indicators and perceptions of odors were significantly associated with child’s asthma and allergy symptoms. Indoor dampness indicators were risk factor for the rhinitis and sneezing without cold; similar results were found in the undesirable odors analyses, and they were risk factors for the rhinitis, wheezing, allergy, and eczema. In spring and summer, the occasional ventilation had certain inhibitory effect on the asthma, but in spring, frequent ventilation was a risk factor for asthma. Ventilation is an effective method for removing or diluting indoor potentially harmful pollutants.
KeywordsAsthma Allergic symptoms Indoor dampness Odor Ventilation
The project is supported by the National Key Research and Development Program of China (Grant No. 2016YFC0207103).
Informed consent Informed consent was obtained from all individual participants included in the study. All data are anonymous and do not reveal information about any households.