Youth Cohort Study of England and Wales, 1989-1991; Cohort Four, Sweep One to...

Abstract copyright UK Data Service and data collection copyright owner. The Youth Cohort Study (YCS) is a major programme of longitudinal research designed to monitor the...本摘要版权归英国数据服务中心（UK Data Service）及数据采集版权所有者所有。青年队列研究（Youth Cohort Study, YCS）是一项大型纵向研究项目，旨在对……进行持续监测。