对大气污染程度不同的两个地区,系统地测定大气中总悬浮颗粒的浓度、紫外线强度,检查佝偻病患病率。结果发现,总悬浮颗粒浓度高的工业区紫外线强度明显减弱。用分层分析法及Logistic多元回归分析法调整影响患病的干扰因素后,佝偻病患病率,工业区为62%,居住区为42%。相对危险性为1.5。结果表明,大气污染导致紫外线减弱,对佝偻病发病确有明显影响。 In two regions with different degrees of atmospheric pollution, the total concentration of suspended particles in the atmosphere, the intensity of ultraviolet light and the prevalence of rickets were systematically measured. The results showed that the total suspended particles in the industrial zone of high UV intensity decreased significantly. Using stratified analysis and Logistic multiple regression analysis to adjust the influencing factors of the disease, the prevalence of rickets was 62% in the industrial area and 42% in the residential area. The relative risk of 1.5. The results show that air pollution led to weakened UV, the incidence of rickets has a clear impact.