Dawson K P, Allan J, Fergusson D M
N Z Med J. 1983 Mar 9;96(727):165-7.
The relationship of hospital attendances for acute asthma attacks to air pollution levels in Christchurch was studied over the winter months of 1981. Attendances for acute asthma did not increase with increases in air pollution; indeed, higher pollution tended to be characterised by lower hospital attendances. This trend increased when multiple regression analysis was used to control the effects of climatic factors.
1981年冬季，对克赖斯特彻奇市急性哮喘发作的医院就诊人数与空气污染水平之间的关系进行了研究。急性哮喘的就诊人数并未随着空气污染的增加而增加；事实上，污染程度越高，医院就诊人数往往越低。当使用多元回归分析来控制气候因素的影响时，这种趋势更加明显。
