CORE--DATA ACQUISITION

数据采集核心的存在是为了处理更复杂数据和/或具有更高采集成本的数据的新采集和更新，包括将这些数据初始处理为分析有用的数据资源。将通过这一核心获得三个专门数据库。(1)我们建议继续更新我们非凡的医疗保险索赔记录纵向数据库。我们目前的数据库包含1984年至2001年约5000万美国老年人的综合医疗保险索赔。我们建议每年更新这些档案，提供2002-2006年的数据。(2)我们建议为加州获取更新的医疗补助记录，向前扩展并丰富NBER已经到位的加州医疗补助数据。(3)我们建议获得一个高度专业化的版本的纵向研究老化丹麦双胞胎（LSADT）的调查，结合健康，生物和社会经济数据，从公开的调查，从一个新的补充“经济学”的调查模块，并从行政数据由统计丹麦。

The data acquisition core exists to handle new acquisitions and updates of more complex data, and/or data that have higher acquisition costs, including the initial processing of these data into analytically useful data resources. Three specialized databases will be acquired through this core. (1) We propose to continue to update our extraordinary longitudinal database of Medicare claims records. Our current database contains comprehensive Medicare claims for about 50 million older Americans from 1984 to 2001. We propose to update these files annually with data from 2002-2006. (2) We propose to acquire updated Medicaid records for California, extending forward and enriching the California Medicaid data already in place at the NBER. (3) We propose to acquire a highly specialized version of the Longitudinal Study of Aging Danish Twins (LSADT) survey which combines health, biological, and socioeconomic data from the publicly available survey, from a new supplemental "economics" module of the survey, and from administrative data maintained by Statistics Denmark.