CRELES: Costa Rican Longevity and Healthy Aging Study, 2005 (Costa Rica Estudio de Longevidad y Envejecimiento Saludable)

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. Baseline household interviews were conducted between November 2004 and September 2006, with two-year follow-up interviews. The 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). The main study objective was to determine the length and quality of life, and its contributing factors in the elderly of Costa Rica. 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 and overnight urine collection (such as cholesterol, glycosylated hemoglobin, C-reactive protein, cortisol, and other components of integrative allostatic load measures). Mortality events are tracked and conditions surrounding death are measured in a surviving family interview (longitudinal follow-up data are not yet publicly available).

哥斯达黎加长寿与健康老龄化研究（CRELES，或称哥斯达黎加健康长寿研究）是一项全国性代表性的纵向调查，旨在探讨2005年时年龄在60岁及以上的2,827名哥斯达黎加人的健康状况和生活历程。该研究在2004年11月至2006年9月期间进行了基线家庭访谈，并进行了为期两年的后续访谈。样本来源于2000年人口普查中出生于1945年或更早的哥斯达黎加居民，并对最高龄人群（95岁及以上）进行了超额抽样。研究的主要目标是确定哥斯达黎加老年人的寿命长度与生活质量，以及影响这些因素的要素。生命统计数据显示，哥斯达黎加作为一个中等收入国家，其预期寿命异常之高，甚至超过了美国，但CRELES是首个旨在调查哥斯达黎加成人健康水平的全国性代表性调查。CRELES的公共使用数据文件包含广泛主题的信息，包括自我报告的身体健康状况、心理健康、生活环境、健康行为、医疗服务利用、社会支持和社会经济地位。客观健康指标包括人体测量学数据、观察到的活动能力以及空腹血液和夜间尿液采集的生物标志物（如胆固醇、糖化血红蛋白、C反应蛋白、皮质醇和其他整合性稳态负荷测量成分）。死亡事件及其相关条件通过存活家庭成员访谈进行追踪（纵向随访数据尚未公开）。