Planning for the appropriate analysis in school-based drug-use prevention studies.
Planning for the appropriate analysis in school-based drug-use prevention studies.
复制标题
规划在学校吸毒预防研究中进行适当的分析。
DOI：
10.1037//0022-006x.58.4.458
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发表时间：
1990
影响因子：
5.9
通讯作者：
Hannan,PJ
中科院分区：
文献类型：
--
作者：
Murray,DM;Hannan,PJ
以学校为基础的预防吸毒研究往往对整个学校采取干预措施。这些研究的一个主要问题是，当完整的社会群体被分配到研究条件时，往往会出现群体内依赖。对2项此类研究的数据进行分析，发现常见药物使用措施的组内相关系数在0.02和0.05之间。因为即使是这种适度的组内依赖性也会使传统的固定效应分析失效，研究人员应该采用承认这种依赖性的替代方法。这些替代方法进行审查，并说明计算样本量要求的适当方法。研究人员在规划未来的研究时应考虑这些分析问题，因为无偏见分析所需的学校数量可能比传统方法大得多。（PsycINFO数据库记录（c）2016阿帕，保留所有权利）
School-based drug-use prevention studies often apply interventions to entire schools. A major problem for these studies results from the intragroup dependence often seen when intact social groups are assigned to study conditions. Analysis of data from 2 such studies revealed intraclass correlation coefficients between 0.02 and 0.05 for common drug use measures. Because even such modest intragroup dependence can invalidate the traditional fixed-effects analyses, researchers should adopt alternative methods that acknowledge this dependence. These alternative methods are reviewed, and appropriate methods for computing sample size requirements are illustrated. Investigators should consider these analysis issues when planning future studies, because the number of schools required for an unbiased analysis may be substantially greater than for the traditional methods.(PsycINFO Database Record (c) 2016 APA, all rights reserved)