一、普查年龄及普查率:对农村社员、厂矿企业职工、城市居民的普查年龄从14岁开始;厂矿、机关应包括退休工人、职工。其普查率不应少于90％。在统计患病率时,除总的慢性气管炎、肺气肿、肺心病三者各自患病率外,还应按年龄组(14～20岁、21～30岁、31～40岁、41～50岁、51～60岁、61～70岁及70岁以上)、性别及工种、职工分别统计其患病率。二、普查时应进行病因调查。包括:自然条件、 I. Age of census and census rate: The age of census for rural members, employees of factories and mines, and urban residents began at 14 years old; factories, mines and agencies should include retirees and workers. Its census rate should not be less than 90%. In the statistics of prevalence, in addition to the overall prevalence of chronic bronchitis, emphysema, and pulmonary heart disease, they should also be divided by age group (14 to 20 years, 21 to 30 years, 31 to 40 years, 41 years). The prevalence rates were calculated for each of the 50-year-olds, 51-60-year-olds, 61-70-year-olds, and 70-year-olds, gender, type of work, and employees. Second, the census should be investigated when the cause. Including: natural conditions,