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. Author manuscript; available in PMC: 2012 Apr 10.
Published in final edited form as: J Learn Disabil. 2008 Mar-Apr;41(2):126–142. doi: 10.1177/0022219407313426

Table 9.

Pretest to Posttest Standardized Mean Difference Effect Sizes

Oral Reading Fluency Word Identification Word Attack Passage Comprehension
Group Study 1 Study 2 Study 1 Study 2 Study 1 Study 2 Study 1 Study 2
Treatment 1.76 1.66 −.27   .24   .06   .02 .66 .20
Comparison 1.25 1.55 −.36 −.39 −.09 −.56 .07 .37