CARDIA CHICAGO FC - TASK AREA A PERIOD OF PERFORMANCE OPY 1: 07/01/2019 - 06/30/2020

青年冠状动脉风险发展（CARDIA）研究由国家心肺血液研究所（NHLBI）于1985年建立，旨在研究美国四个社区（伯明翰，AL，芝加哥，IL，明尼阿波利斯，MN和奥克兰，CA）的青年心血管疾病风险的分布和演变（http://www.cardia.dopm.uab.edu/）。原始队列（n= 5115）被选择在每个社区的年龄（18-24岁和25-30岁）、性别、种族（黑人和白人）和教育（高中或高中以下和高中以上）的亚组中有大约相同数量的参与者。参与者从总人口、选定的人口普查区或一个中心的大型健康计划的成员中抽样。基线检查在1985-86年期间进行了14个月。大约每2-5年进行8次随访检查（1987-88、1990-91、1992-93、1995-96、2000-01、2005-06、2010-11和2015-16）。在每次随访检查中，存活队列的参与率分别为90、86、81、79、74、72、72和71%。每六个月与队列成员联系一次，以获取重要状态和当前居住地的信息。每隔六个月的接触还包括收集接触者之间发生的重大疾病或损伤和住院信息，以确定临床心血管疾病（CVD）事件。在截至2017年1月的五年期间，成功联系了93%的幸存者。

The Coronary Artery Risk Development in Young Adults (CARDIA) study was established in 1985 by the National Heart, Lung, and Blood Institute (NHLBI) to study the distribution and evolution of cardiovascular disease risk beginning in young adulthood in four U.S. communities (Birmingham, AL; Chicago, IL; Minneapolis, MN; and Oakland, CA) (http://www.cardia.dopm.uab.edu/). The original cohort (n=5,115) was selected to have approximately the same number of participants in subgroups of age (18-24 and 25-30), sex, race (black and white), and education (high school or less and more than high school) within each community. Participants were sampled from the total population, selected census tracts or, in the case of one center, the membership of a large health plan. The baseline examination was conducted over a 14-month period during 1985-86. Eight follow-up examinations have been conducted approximately every 2-5 years (1987-88, 1990-91, 1992-93, 1995-96, 2000-01, 2005-06, 2010-11, and 2015-16). Participation of the surviving cohort was 90, 86, 81, 79, 74, 72, 72, and 71 percent at each of the respective follow-up examinations. Cohort members are also contacted every six months to obtain information on vital status and current residence. Every other six-month contact also includes the collection of information on major illness or injury and hospitalizations occurring between contacts to identify clinical cardiovascular disease (CVD) events. Over the five-year period ending January 2017, 93% of the surviving cohort has been successfully contacted.