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1.前言近年各国心血管病死亡率有很大变化。例如冠心病的死亡率,美国从六十年代后期以来,明显下降,还有一些国家也有所下降,有的国家变化不大,有些国家冠心病死亡率仍在上升。脑卒中的死亡率不少国家有所下降,但各国之间差别很大。这些变动趋势多属孤立的观察,死亡原因缺乏可靠的核实。关于未造成死亡的心血管病变动趋势的资料也不完
1. Preface In recent years, the mortality rate of cardiovascular diseases in many countries has changed greatly. For example, the mortality rate of coronary heart disease in the United States has dropped significantly since the late 1960s and some countries have declined. In some countries, the mortality rate has not changed much. In some countries, the mortality rate of coronary heart disease is still on the rise. Stroke mortality has dropped in many countries, but varies widely from country to country. Most of these changes are isolated observation, the lack of reliable verification of the cause of death. There is also a paucity of information on trends in cardiovascular disease that have not caused death