Support for the Central Data Collection Center (CDCC)

承包商Westat在美国国家癌症研究所的前列腺、肺、结直肠癌和卵巢癌（PLCO）癌症筛查试验中为大约15.5万名参与者进行参与者保留活动和被动数据收集。Westat负责协调数据链接，并负责获得和维护机构审查委员会、癌症登记处、国家死亡指数（NDI）以及医疗保险和医疗补助服务中心（CMS）的批准。Westat管理不同实体之间的数据传输，并处理提交到数据存储库的数据。Westat主要通过发送邮件、更新地址变更和通过电话回答问题来继续参与者保留活动，并将状态的任何变化记录和管理在研究数据库中。此外，Westat还监督了研究中分包的癌症筛查中心的类似活动。

The Contractor, Westat conducts participant retention activities, as well as passive data collection for approximately 155,000 participants in the National Cancer Institute’s Prostate, Lung, Colorectal and Ovarian (PLCO) Cancer Screening Trial. Westat coordinates data linkages and is responsible for attaining and maintaining approvals with institutional review boards, cancer registries, the National Death Index (NDI), and the Centers for Medicare and Medicaid Services (CMS). Westat manages data transfers with various entities and processes the data for submission to a data repository. Westat continues participant retention activities primarily by sending out mailings, updating changes in address, and answering questions by phone, with any changes in status documented and managed in a study database. Additionally, Westat oversees similar activities with subcontracted cancer screening centers in the study.