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1976～1977年二年间观察了23个美国棉纺厂的工人健康情况,二次共检查6,608人次。纺纱原料用纯棉,或棉花与合成纤维混纺,后者甚至可高达65％。本文主要研究棉纺厂包棉的细菌污染是否可作为棉纺工人肺反应发生程度的指标。调查方法包括询问有关棉尘肺的症状,但其发生率偏低,仅9％,在以后的分析中价值不大。肺功能检查主要测定星期一(星期日休息)上班前和上班后约6小时的第一秒最大呼气流速(FEV_(1.0))。每人每次试验测4次,
During the two years from 1976 to 1977, the health status of workers in 23 U.S. cotton mills was observed. A total of 6,608 passengers were examined twice. Spinning raw materials, cotton, or cotton and synthetic fibers, which can even be as high as 65%. This paper mainly studies whether the cotton bacterial contamination of the cotton spinning mill can be used as an indicator of the degree of pulmonary response of the cotton spinning workers. The survey included asking about the symptoms of cotton pneumoconiosis, but its incidence was low at only 9% and was not of value in later analyzes. Pulmonary function tests mainly measured the maximum expiratory flow rate in the first second (FEV_ (1.0)) of about 6 hours before and after work on Monday (Sunday break). Each test 4 times each test,