During the summer of 1994, a cross-sectional epidemiological study, in which the pulmonary function of children in Tehran was compared with pulmonary function in children in a rural town in Iran, was conducted.
Four hundred children aged 5-11 y were studied.
Daytime ambient nitrogen dioxide, sulfur dioxide, and particulate matter were measured with portable devices, which were placed in the children's neighborhoods on the days of study.
Levels of these ambient substances were markedly higher in urban Tehran than in rural areas.
Children's parents were questioned about home environmental exposures (including heating source and environmental tobacco smoke) and the children's respiratory symptoms.
Pulmonary function was assessed, both by spirometry and peak expiratory flow meter.
Forced expiratory volume in 1 s and forced vital capacity-as a percentage of predicted for age, sex and height-were significantly lower in urban children than in rural children.
Both measurements evidenced significant reverse correlations with levels of sulfur dioxide, nitrogen dioxide, and particulate matter.
Differences in spirometric lung function were not explained by nutritional status, as assessed by height and weight for age, or by home environmental exposures.
Reported airway symptoms (i.e., cough, phlegm, and wheeze) were higher among rural children, whereas reported physician diagnosis of bronchitis and asthma were higher among urban children. (...)
Mots-clés Pascal : Pollution air, Iran, Asie, Toxicité, Appareil respiratoire pathologie, Fonction respiratoire, Enfant, Homme, Epidémiologie, Milieu urbain, Milieu rural
Mots-clés Pascal anglais : Air pollution, Iran, Asia, Toxicity, Respiratory disease, Lung function, Child, Human, Epidemiology, Urban environment, Rural environment
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0343285
Code Inist : 002B03M02. Création : 27/11/1998.