A Practical Guide to Calculating Cohen's f(2), a Measure of Local Effect Size, from PROC MIXED.
A Practical Guide to Calculating Cohen's f(2), a Measure of Local Effect Size, from PROC MIXED.
复制标题
DOI:
10.3389/fpsyg.2012.00111
复制
发表时间:
2012
影响因子:
3.8
通讯作者:
Mermelstein RJ
中科院分区:
文献类型:
--
作者:
Selya AS;Rose JS;Dierker LC;Hedeker D;Mermelstein RJ
Reporting effect sizes in scientific articles is increasingly widespread and encouraged by journals; however, choosing an effect size for analyses such as mixed-effects regression modeling and hierarchical linear modeling can be difficult. One relatively uncommon, but very informative, standardized measure of effect size is Cohen’s f2, which allows an evaluation of local effect size, i.e., one variable’s effect size within the context of a multivariate regression model. Unfortunately, this measure is often not readily accessible from commonly used software for repeated-measures or hierarchical data analysis. In this guide, we illustrate how to extract Cohen’s f2 for two variables within a mixed-effects regression model using PROC MIXED in SAS® software. Two examples of calculating Cohen’s f2 for different research questions are shown, using data from a longitudinal cohort study of smoking development in adolescents. This tutorial is designed to facilitate the calculation and reporting of effect sizes for single variables within mixed-effects multiple regression models, and is relevant for analyses of repeated-measures or hierarchical/multilevel data that are common in experimental psychology, observational research, and clinical or intervention studies.
登录
查看更多内容
影响因子:
5
作者:
Peugh, James L.
通讯作者:
Peugh, James L.
DOI:
10.1111/j.1530-0277.2008.00742.x
发表时间:
2008-09-01
影响因子:
3.2
作者:
Friedmann, Peter D.;Rose, Jennifer S.;Stein, Michael D.
通讯作者:
Stein, Michael D.
影响因子:
4.4
作者:
Sterling, Kymberle Landrum;Mermelstein, Robin;Turner, Lindsey;Diviak, Kathleen;Flay, Brian;Shiffman, Saul
通讯作者:
Shiffman, Saul
影响因子:
4
作者:
Baguley, Thom
通讯作者:
Baguley, Thom
影响因子:
2.7
作者:
Kirk, RE
通讯作者:
Kirk, RE