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. Author manuscript; available in PMC: 2016 Apr 12.
Published in final edited form as: J Media Lit Educ. 2014;6(1):1–14.

Table 2.

Pretest means, posttest means, F-values, and effect sizes for repeated measures analyses of program impact on adolescent health and media literacy outcomes

Outcome Pretest M (SD) Posttest M (SD) F-value Effect size (d)
Sexual Health
 Intentions for sexual communication 2.27 (2.92) 2.59 (2.92) (1,55) = 14.37** .30
 Intentions for condom use 3.32 (.92) 3.52 (.90) (1,55) = 4.10* .22
 Sexual health knowledge 10.20 (2.92) 11.08 (2.92) (1,58) = 3.58± .30
 Intentions to have sex 1.42 (.70) 1.51 (.67) (1,55) = 1.40
 Efficacy to refuse sexual behaviors 3.25 (.54) 3.32 (.52) (1,55) = .75
Media Literacy
 Media deconstruction skills 4.61 (2.30) 5.78 (2.32) (1,55) = 11.24** .51
 Realism 2.23 (.46) 2.08 (.45) (1,54) = 7.34** .33
 Media skepticism 3.44 (.77) 3.68 (.75) (1,55) = 4.31* .32
 Similarity 2.00 (.46) 1.97 (.45) (1,55) = .37

Note:

±

= p<.10;

*

= p<.05;

**

= p<.01;

***

=p<.001