作者调查的结果提示吸烟与呼吸道症状和慢性支气管炎(慢支)有密切关系。 对象和方法 1987年4月我们对西安热工研究所和西安农业机械厂工作人员进行了吸烟与呼吸道症状和慢支情况的调查。共调查761人,其中男性 The authors’ findings suggest that smoking and respiratory symptoms are closely related to chronic bronchitis (chronic bronchitis). Subjects and methods April 1987 We conducted a survey of smoking and respiratory symptoms and chronic bronchitis in Xi’an Thermal Research Institute and Xi’an Agricultural Machinery Factory. A total of 761 people were surveyed, including men