The efficiency of two-phase designs in prevalence surverys of mental disorders
The efficiency of two-phase designs in prevalence surverys of mental disorders
复制标题
两阶段设计在精神障碍患病率调查中的效率
作者：
Stephen C. Newman;Patrick E. Shrout;R. Bland
精神障碍的两阶段调查使用筛选测试来识别可能的病例，从而减少了用于访问那些不感兴趣的条件的资源。它表明，使用一个数学模型，在可能会遇到的情况下，在实践中的两个阶段的设计可能会导致患病率估计的效率增加，也提高了案件检测的效率。然而，在某些应用中，效率的适度提高可能不足以保证两阶段数据收集方法的额外复杂性。加拿大埃德蒙顿的一项精神疾病调查采用诊断访谈表和一般健康问卷收集了3258名社区居民的信息，并利用这些数据来说明两阶段方法如何改变实际调查的效率。
SYNOPSIS A two-phase survey of mental disorders uses a screening test to identify possible cases, thereby reducing the resources devoted to interviewing those not having the condition of interest. It is demonstrated using a mathematical model that in situations likely to be encountered in practice a two-phase design may lead to an increase in the efficiency of prevalence rate estimation, and also to an improvement in the efficiency of case detection. However, in certain applications the modest gain in efficiency may not warrant the additional complexity of a two-phase approach to data collection. Data from a survey of mental disorders in Edmonton, Canada, which collected informations on 3258 community residents using the Diagnostic Interview Schedule and the General Health Questionnaire, are used to demonstrate how two-phase methods would have changed the efficiency of an actual survey.
影响因子：
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作者：
J. Murphy;D. Berwick;M. Weinstein;J. Borus;S. Budman;G. Klerman
通讯作者：
J. Murphy;D. Berwick;M. Weinstein;J. Borus;S. Budman;G. Klerman