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childhood Respiratory Illness and the Home Environemt II. Association between Respiratory Illness and Nitrogen Dioxide, Temperature and Relative Humidity

1982; Oxford University Press; Volume: 11; Issue: 2 Linguagem: Inglês

10.1093/ije/11.2.164

1464-3685

Ruth Melia, C D Florey, Richard Morris, Boris Goldstein, H H JOHN, Devin Clark, I NB CRAIGHEAD, J C MACKINLAY,

Air Quality and Health Impacts

Melia R J W [Depratment of Community Medicine, St Thoma's Hospital Medical School, London SE1 7EH] et al. Childhood respiratory illness and the home environment II. Assocation between repiratory and nitrogen dioxide, temperature and relative humidity. International Journal of Epidemiology 1982, 11: 164–169 The relation of respiratory illness to nitrogen dioxide(NO2), temperature and relative humidit in homes with a gas cooker was investigated in five and six year old childern living in an urban area of northern England No2was measured for one week in the child's bedroom and living room of each home, and temperture and relativev humidity were measured in the bedroom only. Information on respiratory conditions experienced by the child and characteristics of the home was collected in a self–administered questionnaire completed by the child's mother. Access was gained to 183 homes(54.3%of 337) homes. After allowing for the effects of ages, sex, social class, the number of cigraette smokers in the home and tempoerature of relative humidity, no statistically significant relation was found between the prevalenence of having one or more respiatory conditions and weekly average levels of NO2 in the bedroom (range 4.7 to 160.8 ppb)or living room (range 9.0 to292.2ppb). However the preva; emce of having one or more resporatoty conditions tended to be highest in homes with high levels of NO2and lowest in homes with low levles, condistent with earlier findings. A significant positive association was found between the prevalence of respiratory conditions and relative humidity(p<.05). A harmful effect on health from NO2 cannot be totally dismissed but if it exists it is weak and detect in small of children.