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Table 8 The results of two-way ANOVA with ethnicities and the 5HTR2A polymorphism as main effects and their interactions

From: Serotonergic gene polymorphisms (5-HTTLPR, 5HTR1A, 5HTR2A), and population differences in aggression: traditional (Hadza and Datoga) and industrial (Russians) populations compared

Source of variation D.F SS MS F p
Ethnic 2 42,032.45 21,016.42 78.22 0.0001
5HTR2A 2 3627.26 1828.63 6.81 0.001
Ethnic × 5HTR2A 4 2795.36 698.84 2.60 0.035
Error 844 226,762.69 268.68   
  1. R2 = 0.206
  2. D.F degrees of freedom,k SS sum of squares, MS mean square, F Fisher criterion, p probability value