一项长达22年的随访调查观察了旧金山市的3686名码头装卸工人。随访期间,共发现395例致死性心脏病猝发病人。为了研究工人的工作活动量及其六项个人特征与发病的关系,此次调查采用了队列分析法。1951年时,四个队列的年龄分别为35～44、45～54、55～64和65～74岁。在此以后,每年都对影响能耗的工作变换和由心脏病猝发导致的猝死或迟发死亡进行随访,其猝发死亡者的登记年龄以75岁为限。资料分析时以大量吸 A 22-year follow-up survey observed 3,686 dockers in San Francisco. During follow-up, a total of 395 fatal cases of fatal heart disease were found. In order to study the amount of workers’ work activity and the relationship between their six personal traits and their morbidity, cohort analysis was used in this survey. In 1951, the four cohorts were 35 to 44, 45 to 54, 55 to 64 and 65 to 74, respectively. Since then, work-related changes affecting energy use and follow-up of sudden or late deaths caused by heart attacks have occurred each year, and the age of registration for those who burst deaths is 75 years. Data analysis to absorb a lot