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. 2014 Sep 9;5:1011. doi: 10.3389/fpsyg.2014.01011

Table 2.

Analyses of differences between the study sample and the comparison samples: effect size with confidence intervals, percentiles, Pearson’s correlation, Student’s t, degrees of freedom, and p. “Across sexes” denotes the female study sample vs. the male comparison samples.

Cohen’s d d lower CI d upper CI Percentile r t df p
Right hand, women Study sample vs. Troche et al. (2007) 1.645 1.093 2.200 95.00 0.791 7.805 69.88 <0.000001
Study sample vs. aggregate sample 0.692 0.299 1.084 75.55 0.036 6.593 24.47 <0.000001

Left hand, women Study sample vs. Troche et al. (2007) 1.200 0.678 1.720 88.50 0.577 5.165 57.52 0.000002
Study sample vs. aggregate sample 0.605 0.213 0.998 72.75 0.036 4.171 24.26 0.00016

Right hand, across sexes Study sample vs. Troche et al. (2007) 0.646 0.151 1.141 74.09 0.311 3.176 70.96 0.00102
Study sample vs. aggregate sample 0.183 -0.209 0.576 57.30 0.010 1.810 24.59 0.0419

Left hand, across sexes Study sample vs. Troche et al. (2007) 0.532 0.041 1.023 70.27 0.256 2.401 64.34 0.0096
Study sample vs. aggregate sample 0.166 -0.226 0.558 56.59 0.095 1.179 24.32 0.1247

Directiveness, women Study sample vs. Ray and Lovejoy (1984) 2.605 2.078 3.132 99.54 0.963 10.763 30.26 <0.000001
Directiveness, across sexes 2.621 2.053 3.187 96.56 0.996 10.225 32.14 <0.000001