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Table 2 Descriptive statistics and sex differences in aggression scales (BPAQ) and right-hand 2D:4D ratio

From: Oxytocin receptor gene polymorphism (rs53576) and digit ratio associates with aggression: comparison in seven ethnic groups

BPAQ scale Population N Men Women t p (sig.)
Mean SD Mean SD
PA Buryats 172 24.8 6.1 21.0 5.3 4.339 < 0.001
Ob-Ugric 248 23.9 6.5 21.0 5.8 3.494 0.001
Tatars 203 21.3 4.5 15.6 4.1 9.440 < 0.001
Russians 217 21.9 6.7 19.9 7.1 1.957 0.052
Hadza 317 25.9 5.1 24.1 5.4 3.048 0.002
Datoga 345 28.7 5.2 28.0 6.0 1.246 0.214
Isanzu 203 16.6 4.4 17.3 5.3 − 0.962 0.337
VA Buryats 172 14.1 3.2 13.3 3.2 1.517 0.131
Ob-Ugric 248 13.6 4.0 13.8 4.2 − 0.290 0.772
Tatars 203 13.3 3.3 12.2 3.5 2.328 0.021
Russians 217 16.7 4.2 15.4 3.7 2.393 0.018
Hadza 317 15.8 4.1 14.7 4.2 2.272 0.024
Datoga 345 18.3 3.9 17.2 4.6 2.333 0.020
Isanzu 203 13.1 3.5 13.5 4.3 − 0.778 0.438
AN Buryats 172 15.5 4.3 18.1 4.8 − 3.749 < 0.001
Ob-Ugric 248 15.3 5.5 16.3 5.4 − 1.223 0.223
Tatars 203 11.5 3.3 11.5 3.7 0.011 0.991
Russians 217 16.9 7.0 18.7 6.3 − 1.964 0.051
Hadza 317 19.4 4.6 20.2 5.3 − 1.424 0.155
Datoga 345 23.1 4.2 22.3 4.6 1.721 0.086
Isanzu 203 15.4 3.7 17.1 4.1 − 2.675 0.008
HT Buryats 172 23.5 5.1 26.0 4.7 − 3.362 0.001
Ob-Ugric 248 21.6 4.6 22.4 4.9 − 1.176 0.241
Tatars 203 19.5 4.2 20.2 4.6 − 1.168 0.237
Russians 217 23.5 5.3 25.1 5.8 − 1.945 0.053
Hadza 317 23.2 6.0 22.7 6.3 0.699 0.485
Datoga 345 29.0 5.3 28.6 6.3 0.686 0.493
Isanzu 203 21.5 5.7 22.4 6.1 − 0.884 0.378
R2D:4D Buryats 172 0.95 0.03 0.96 0.03 − 0.329 0.743
Ob-Ugric 248 0.96 0.03 0.97 0.03 − 2.397 0.017
Tatars 203 0.97 0.03 0.98 0.03 − 2.152 0.033
Russians 217 0.97 0.03 1.00 0.03 − 5.132 < 0.001
Hadza 317 0.97 0.04 0.98 0.04 − 2.365 0.019
Datoga 345 0.96 0.04 0.97 0.04 − 4.075 < 0.001
Isanzu 203 0.95 0.03 0.96 0.04 − 2.297 0.023
  1. Sex differences presented according to Student’s T test (t—test statistics, p – statistical significance)
  2. PA Physical aggression, VA Verbal aggression, AN Anger, HT Hostility, R2D:4D Digit ratio of the right hand