Table 2. The effect sizes (Cohen’s d statistic) for inter-class comparisons in males and females.
Age Classification Comparison
20-24
vs.
25-29
25-29
vs.
30-34
30-34
vs.
35-39
35-39
vs.
40-44
40-44
vs.
45-49
45-49
vs.
50-54
50-54
vs.
55-59
55-59
vs.
60-64
60-64
vs.
65-69
Male 1.6 .5 .6 .5 1.2 .5 1.9 1.6 1.6
Female 1.5 .2 .4 1.0 .8 1.0 1.2 1.7 N/A
Large effect size ≥ 0.80, medium effect size ≥ 0.50, small effect size ≥ 0.20. There was insufficient data in the female 65-69 age class preventing analysis. N/A indicates that insufficient data were available.