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Aboriginals in Canada bear a disproportionately higher burden of some chronic illnesses than nonaboriginals. Although there is a greater prevalence of smoking, poor housing, and overcrowding in aboriginal than nonaboriginal communities, the rates of office and emergency visits for asthma and COPD among aboriginals are not well known. ⋯ These findings indicate that aboriginals bear a disproportionately higher burden of asthma and COPD than nonaboriginals. However, lower use of spirometry and specialist services suggests that there might be access barriers to quality health care for aboriginals in Canada.