CRELES-2: Costa Rican Longevity and Healthy Aging Study - Wave 2, 2006-2008 (Costa Rica Estudio de Longevidad y Envejecimiento Saludable, Ronda 2)

The Costa Rican Longevity and Healthy Aging Study (CRELES, or Costa Rica Estudio de Longevidad y Envejecimiento Saludable) is a nationally representative longitudinal survey of health and lifecourse experiences of 2,827 Costa Ricans ages 60 and over in 2005, the baseline collection. CRELES-2 refers to the second wave of visits in this longitudinal study, and includes the results from these visits. The first wave of interviews, or baseline, of CRELES is also available at http://doi.org/10.3886/ICPSR26681. The second wave fieldwork was conducted from October 2006 to July 2008, with 2,364 surviving and contacted participants. The original sample was drawn from Costa Rican residents in the 2000 population census who were born in 1945 or before, with an over-sample of the oldest-old (ages 95 and over). Vital statistics indicate that Costa Rica has an unusually high life expectancy for a middle-income country, even higher than that of the United States, but CRELES is the first nationally representative survey to investigate adult health levels in Costa Rica. CRELES public use data files contain information on a broad range of topics including self-reported physical health, psychological health, living conditions, health behaviors, health care utilization, social support, and socioeconomic status. Objective health indicators include anthropometrics, observed mobility, and biomarkers from fasting blood samples (such as cholesterol, glycosylated hemoglobin, and C-reactive protein). Mortality events are tracked and conditions surrounding death are measured in a surviving family interview.

哥斯达黎加长寿与健康老龄化研究（Costa Rican Longevity and Healthy Aging Study，缩写CRELES，西班牙语全称为Costa Rica Estudio de Longevidad y Envejecimiento Saludable）是一项具有全国代表性的纵向调查，聚焦2005年基线数据收集中的2827名60岁及以上哥斯达黎加人群的健康状况与人生历程经历。CRELES-2指代该纵向研究的第二波随访调研，包含该波次的全部调研成果。CRELES的首轮访谈（即基线调研）可通过链接http://doi.org/10.3886/ICPSR26681获取。第二波实地调研于2006年10月至2008年7月开展，共成功联系并随访到2364名存活的研究对象。本研究的原始样本源自2000年全国人口普查中的哥斯达黎加居民，筛选标准为出生于1945年及更早，且对95岁及以上的高龄老人进行了超量抽样。生命统计数据显示，哥斯达黎加的预期寿命在中等收入国家中处于极高水平，甚至高于美国，而CRELES则是首个针对哥斯达黎加成年人健康水平开展的全国代表性调查。CRELES公共使用数据文件涵盖多维度调研信息，包括自我报告的身体健康状况、心理健康状态、生活环境、健康行为、医疗服务利用情况、社会支持水平以及社会经济地位。客观健康指标涵盖人体测量学数据、观测运动能力，以及空腹血样采集的生物标志物（如胆固醇、糖化血红蛋白、C反应蛋白）。研究团队会追踪研究对象的死亡事件，并通过对存活家属的访谈获取死亡相关的具体信息。