Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Addressing a statistical power-alpha level blind spot in political- and health-related media research: discontinuous criterion power analyses
Annals of the International Communication Association Pub Date : 2018-04-03 , DOI: 10.1080/23808985.2018.1459198
R. Lance Holbert 1 , Bruce W. Hardy 1 , Esul Park 1 , Nicholas W. Robinson 1 , Heeyoung Jung 1 , Chen Zeng 1 , Erin Drouin 2 , Kelly Sweeney 2
Affiliation  

ABSTRACT A content analysis of 900 political- and health-related media articles published in 11 outlets from 2010 through 2015 reveals a complete disconnect between discussions of statistical power and alpha levels. This study proposes the use of discontinuous criterion power analyses to address this power-alpha blind spot. Additional analyses indicate a sizeable percentage (41.1%) of published works in these areas retaining sufficient statistical power (i.e. .95 or greater) to warrant the use of a stricter alpha level than the traditional α = .05 to detect small effects. The surgical use of more stringent alpha levels to guard against Type I error will instill greater confidence in the empirical findings generated by media research conducted in political and health contexts.

中文翻译:

解决政治和健康相关媒体研究中的统计权力阿尔法水平盲点:不连续标准权力分析

摘要 对 2010 年至 2015 年在 11 个媒体发表的 900 篇政治和健康相关媒体文章的内容分析揭示了统计能力和阿尔法水平的讨论之间完全脱节。本研究建议使用不连续标准功率分析来解决此功率-α 盲点。其他分析表明,在这些领域发表的作品中有相当大的百分比 (41.1%) 保持足够的统计能力(即 0.95 或更大),以保证使用比传统 α = .05 更严格的 alpha 水平来检测小影响。通过外科手术使用更严格的 alpha 水平来防止 I 型错误,这将为在政治和健康背景下进行的媒体研究产生的实证结果灌输更大的信心。
更新日期:2018-04-03
down
wechat
bug