Table 1 Results of logistic regression analyses on the association between different environmental factors and the response variables. P values are controlled for false discovery rate. N = 5726 (personality trait analyses), N = 4925 (wool sucking analysis), N = 5683 (excessive grooming analysis), N = 5550 (owner-evaluated behaviour problem analysis).

From: Early weaning increases aggression and stereotypic behaviour in cats

Variable Aggression to family members Aggression to strangers Aggression to cats Shyness to strangers Contact DF
χ2 P value χ2 P value χ2 P value χ2 P value χ2 P value
Weaning age 17.62 0.042 26.6 0.003 19.02 0.028 5.22 0.700 10.64 0.238 7
Sex 0.95 0.466 7.74 0.021 14.17 0.001 6.37 0.027 49.32 0.0005 1
Age 0.21 0.749 13.02 0.002 63.22 0.001 19.04 0.0004 42.52 0.0005 1
Hormonal status 6.03 0.042 5.54 0.057 40.43 0.001 49.11 0.0004 4.71 0.061 1
Breed 110.96 0.001 117.44 0.001 104.12 0.001 196.65 0.0004 146.68 0.0005 18
Access to outdoors    25.92 0.001 25.94 0.001      5
Other cats 69.42 0.001 18.47 0.001 37.16 0.001 4.77 0.057 7.20 0.019 1
Shyness    4.93 0.078 27.17 0.001    269.71 0.0005 1
Extraversion 4.87 0.073      78.62 0.0004    1
  Shyness to novel objects Wool sucking Excessive grooming Owner-evaluated behaviour problem    
Variable χ 2 P value χ 2 P value χ 2 P value χ 2 P value DF
Weaning age 8.39 0.401 24.4 0.005 16.08 0.102 18.96 0.071 7
Sex 0.13 0.783 1.18 0.401 0.12 0.841 0.05 0.897 1
Age 18.65 0.0004 20.29 0.001 4.89 0.107 23.34 0.004 1
Hormonal status 63.99 0.0004        1
Breed 171.94 0.0004 103.39 0.001 43.63 0.027 43.24 0.018 18
Access to outdoors 26.57 0.0004 57.09 0.001 19.49 0.037    5
Other cats 12.47 0.001      4.34 0.159 1
Shyness    39.59 0.001 31.96 0.01 42.55 0.004 1
Extraversion 42.47 0.0004 15.45 0.001 5.03 0.105    1
Aggression    14.52 0.001 26.61 0.01 129.57 0.004 1
Stereotypic behaviour        43.97 0.004 1