TY - RPRT TI - Sample size planning for the standardized mean difference: accuracy in parameter estimation via narrow confidence intervals. AU - Ken Kelley AU - Joseph R Rausch PY - 2006 DO - 10.1037/1082-989x.11.4.363 UR - https://pubmed.ncbi.nlm.nih.gov/17154752/ ID - 17154752 ER -