Methods This population cohort study linked the National Health Insurance files, family registration, and death certificates.

方法：这次大范围人口调研与全国健康保险档案，家庭登记，和死亡证明相关联。

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Four were cohort studies in which a healthy population was genetically screened at the outset and followed for 15 years to see who developed breast cancer and who did not.

四项是同龄组研究，也就是说研究开始时对一个健康人群做遗传筛查，然后观测其后的15年他们中哪些人会患上乳腺癌，哪些人不会。

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Life expectancy was calculated for the study cohort, all Israelis, and the population of the Russian Federation.

对上述研究对象、所有以色列人和俄罗斯联邦人的预期寿命进行了计算。

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The strengths of the Swedish study reviewed here include the large population based prospective cohort design along with the long period of follow up to validate the composition of the kidney stones.

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The success of the all-volunteer force in replacing the draft with a superb fighting force has transformed the armed services into a cohort of highly skilled warriors about whom the general population knows little, and to whom it is not as tied as has historically been the case.

CENTERFORSECURITYPOLICY: A world of hurt