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Table 3 Group × time interactions on the outcomes variables and effect sizes (Cohen’s d)

From: A controlled trial of a dissonance-based eating disorders prevention program with Brazilian girls

Variables Group × time interactiona
F p d Effect sizeb Powerc
Body dissatisfaction
 BSQ 14.00 .000 0.92 Large 0.99
Sociocultural influences
 SATAQ-3 14.40 .000 0.96 Large 1.00
Eating attitudes
 EAT-26 3.28 .076 0.46 Intermediate 0.94
Eating disorders symptoms
 EDDS 3.83 .056 0.56 Intermediate 0.99
Depressive symptoms
 CDI 8.24 .006 0.80 Large 0.99
Negative affect
 PANAS 6.64 .013 0.75 Intermediate 0.99
Body appreciation
 BAS 9.07 .004 0.71 Intermediate 0.99
  1. aData from Mixed ANOVA, with condition (assessment-only and BP) as between-subjects factor and time (pre and posttest) as within-subjects factor
  2. bAccording to Cohen (1988)
  3. cCalculating using the effect-size and the final sample size