title: Correct effect size estimates for strength of association statistics: comment on Odgaard and Fowler (2010).
abstract: Odgaard and Fowler (2010) articulated the importance of reporting confidence intervals (CIs) on effect size estimates, and they provided useful formulas for doing so. However, one of their reported formulas, pertaining to the calculation of CIs on strength of association effect sizes (e.g., R² or η²), is erroneous. This comment identifies the error and provides 2 accurate alternatives. An illustration is presented, and the importance of authors' specification of their chosen CI estimation formula is asserted.
authors: Matthew D
authors: MD
authors: Lerner
authors: Amori Yee
authors: AY
authors: Mikami
mesh_terms: D016001:Confidence Intervals; D003625:Data Collection / Q000706:statistics & numerical data*; D035081:Editorial Policies; D019983:Guideline Adherence; D006801:Humans; D010506:Periodicals as Topic; D011586:Psychology, Clinical / Q000706:statistics & numerical data*; D012017:Referral and Consultation / Q000706:statistics & numerical data*; D012106:Research / Q000706:statistics & numerical data*