How attrition impacts the internal and external validity of longitudinal research.
作者信息
Barry Adam E
机构信息
Division of Health and Safety, Texas A&M University, Mail Stop 4243, College Station, TX 77843-4243, USA.
出版信息
J Sch Health. 2005 Sep;75(7):267-70. doi: 10.1111/j.1746-1561.2005.00035.x.
Abstract
摘要
Zotero 插件