为了解个人防护(戴口罩)及吸烟对石棉肺发病的影响,我们对某石棉矿五年以上接尘工龄的365名男性采矿及选矿工进行了调查。将个人佩戴普通纱布口罩的习惯分坚持、一般和不戴三组,其资料由被调查者所在单位的领导及老工人提供。吸烟按指数>1为吸烟者,吸烟指数=(每日吸烟量(支)×吸烟年限)/开始吸烟年龄。吸烟史由体检时个 To understand the impact of personal protection (wearing a mask) and smoking on the incidence of asbestosis in lungs, we surveyed 365 male miners and their beneficiaries who had been exposed to ashes for more than five years in a certain asbestos mine. The individual wearing ordinary gauze masks customary sub-insistence, general and do not wear three groups, the information provided by the respondent unit’s leadership and veterans. Smoking by index> 1 for smokers, smoking index = (daily amount of cigarettes (branch) × smoking years) / start smoking age. Smoking history by a physical examination