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TABLE 1. Effect Size by Location of Study

Location of study
Effect size
 Outside United States
 United States
 Grand total
 Outside United States
 United States
Low 7 5 12 41.18% 26.32%
Medium 6 8 14 35.29% 42.11%
High 4 6 10 23.53% 31.58%
Grand total
 17
 19
 36

Note. Low effect size: less than 0.45; medium effect size: 0.45–1.85; high effect size: greater than 1.85.





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