Ferris B G, Burgess W A, Worcester J
Br J Ind Med. 1967 Jan;24(1):26-37. doi: 10.1136/oem.24.1.26.
A sample of 147 men drawn from the workers in a pulp mill was compared with one of 124 men from a paper mill. The former included those exposed to chlorine and to sulphur dioxide. No significant differences were found in respiratory symptoms or in simple tests of ventilatory function in the two samples, but men working in chlorine had a somewhat poorer respiratory function and more shortness of breath than those working in sulphur dioxide. The working population of both mills together had a lower prevalence of respiratory disease than that of the male population of Berlin, N.H., previously studied, suggesting that working populations may not be representative of the general population. Further, a low prevalence of disease in a working population exposed to pollutants may not indicate their `safety' in general populations.
从一家纸浆厂的工人中抽取了147名男性样本，并与一家造纸厂的124名男性样本进行了比较。前者包括接触氯和二氧化硫的工人。在两个样本中，呼吸症状或通气功能简单测试均未发现显著差异，但接触氯的工人的呼吸功能略差，气短症状比接触二氧化硫的工人更多。这两家工厂的在职员工呼吸道疾病患病率低于新罕布什尔州柏林市之前研究的男性人群，这表明在职员工可能不具有普通人群的代表性。此外，接触污染物的在职员工中疾病患病率较低，并不一定表明这些污染物在普通人群中是“安全的”。
