The epidemiology of indoor nitrogen dioxide in the U.K

The results of three studies on the effect of gas cooking on the lung function of children are reported. The studies which have been carried out in England and Scotland with children aged 6-11, 6-7 and 5-6 years, respectively, show that there is only a weak association between indoor levels of NO2 and respiratory illness. Nevertheless, the consistency of the difference in the rate of respiratory diseases in children from homes with electric and gas cookers suggest there is some hazard to the use of unflued gas appliances which may warrant further epidemiological investigation.