Progress in the past decade: an examination of the precision of cluster randomized trials funded by the U.S. Institute of Education Sciences
Progress in the past decade: an examination of the precision of cluster randomized trials funded by the U.S. Institute of Education Sciences
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过去十年的进展：美国教育科学研究所资助的整群随机试验的精度检验
DOI：
10.1080/1743727x.2016.1150454
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发表时间：
2016
影响因子：
2
通讯作者：
Ben Kelcey
中科院分区：
文献类型：
--
作者：
Jessaca K. Spybrook;Ran Shi;Ben Kelcey
摘要本文考察了教育科学研究所（IES）资助的整群随机试验（CRT）的统计精度。具体来说，它比较了两组研究（IES早期资助的研究（2002-2004年）和近年来资助的研究（2011-2013年））的随机化集群总数和最小可检测效应量（MDES）。总体而言，近期队列研究的MDES平均精确度是早期队列的两倍多（即0.48与0.23）。研究结果表明，在过去的十年中，由IES资助的CRT的精确度持续大幅提高，这是设计研究的关键一步，这些研究有可能产生关于教育干预措施有效性的高质量证据。
ABSTRACT This article examines the statistical precision of cluster randomized trials (CRTs) funded by the Institute of Education Sciences (IES). Specifically, it compares the total number of clusters randomized and the minimum detectable effect size (MDES) of two sets of studies, those funded in the early years of IES (2002–2004) and those funded in the recent years (2011–2013). Overall, the average precision in terms of MDES of studies in the recent cohort was more than double that of the early cohort (i.e. 0.48 compared to 0.23). The findings suggest a consistent and substantial increase in the precision of CRTs funded by IES in the past decade which is a critical step towards designing studies that have the potential to yield high-quality evidence about the effectiveness of educational interventions.
影响因子：
5
作者：
Ohidul Siddiqui;D. Hedeker;B. Flay;F. Hu
通讯作者：
Ohidul Siddiqui;D. Hedeker;B. Flay;F. Hu