ABSTRACT
Respiratory health effects are divided into respiratory symptoms and levels of pulmonary function. Since the size of the effects of gas stove use on respiratory symptoms and levels of pulmonary function have been small in those studies in which effects have been found, the sample sizes required to identify these effects need to be large. An association between gas stove use and either respiratory symptoms or levels of pulmonary function will be created if some extraneous factor or factors associated with gas stove use is also associated with the respiratory outcomes. Instead, the study of gas stove effects has been incorporated into studies on childhood respiratory illness in general or studies designed to evaluate the effects of ambient air pollution. Much data has been collected which bears directly or indirectly on the issue, either from epidemiological studies or experimental studies involving nitrogen dioxide exposure.
