A national record linkage to study acute myocardial infarction incidence and case fatality in Sweden
A national record linkage to study acute myocardial infarction incidence and case fatality in Sweden
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DOI：
10.1093/ije/30.suppl_1.s30
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发表时间：
2001-10-01
影响因子：
7.7
通讯作者：
Ysberg, AS
中科院分区：
文献类型：
--
作者：
Hammar, N;Alfredsson, L;Ysberg, AS
背景在过去的几十年里，瑞典的冠心病死亡率发生了实质性的时间变化，以及人口差异。这些变化和差异在多大程度上也适用于心肌梗死的发生率，这方面的信息很少。本文的目的是描述的方法，用于确定在最近开发的国家急性心肌梗死登记在瑞典的情况下，并提出估计的发病率和病死率在Sweden.Material和方法急性心肌梗死（AMI）事件的情况下，确定了记录链接的常规收集的数据，出院和死亡。在28天内的病死率确定的联系事件的情况下，国家死因Register.Results约40 000例AMI每年记录在瑞典在1987年至1995年。人们注意到，发病率在年龄和性别方面存在着众所周知的差异，1987年至1995年期间发病率有所下降。在住院病例中，30-89岁的男性和女性的病死率相似。如果将院外死亡病例也考虑在内，男性的病死率略高。缺血性心脏病患者的国家样本的医疗记录检查建议一个高灵敏度（94%）和高阳性预测值（86%）的ICD-9代码410在出院数据方面明确AMI.Conclusions国家急性心肌梗死登记提供了一个新的可能性，研究AMI的发病率，以及病死率，在瑞典。
Background During the last decades substantial temporal changes, as well as population differences, in coronary heart disease mortality have occurred in Sweden. There is little information to what extent these changes and differences also apply to myocardial infarction incidence. The aim of this paper was to describe the methods used to identify cases in a recently developed National Acute Myocardial Infarction Register in Sweden, and to present estimates of incidence and case fatality in Sweden.Material and Methods Incident cases of acute myocardial infarction (AMI) were identified by record linkage of routinely collected data on hospital discharges and deaths. Case fatality within 28 days was ascertained by linkage of incident cases to the National Cause of Death Register.Results About 40 000 new cases of AMI per year were recorded in Sweden during 1987-1995. Well-known differences in incidence with regard to age and gender were observed, as well as a decline in incidence between 1987 and 1995. A similar case fatality was seen in men and women aged 30-89 among hospitalized cases. When fatal cases outside hospital were also considered the case fatality was somewhat higher in men. Examination of medical records for a national sample of ischaemic heart disease patients suggested a high sensitivity (94%) and a high positive predictive value (86%) for ICD-9 code 410 in hospital discharge data with regard to definite AMI.Conclusions The National Acute Myocardial Infarction Register offers a new possibility to study the incidence of AMI, as well as case fatality, in Sweden.