Multiple regression analysis on owner-directed aggression.

Values are coefficient of determination (R2), the number of animals (n), and Standard partial regression coefficients of selected variables. N shows the number of breeds out of 14 in which a certain variable was selected in the multiple regression analyses. Four explanatory variables (“source of acquisition”, “housing condition”, “sex”, and “neutered”) were applied as nominal variables. a: p<0.001, b: p<0.01, c: p<0.05.