Table 2.

Regression models 5–8

Independent variablesModel 5 (hurdle model): Warriorship scoreModel 6 (hurdle model): Warriorship scoreModel 7: Battle leaderModel 8: Battle leader
Number of wives (count)1.61*
[1.04; 3.02]
Number of wives (zero)3.12*
[1.06; 12.90]
Number of children (count)1.16
[0.63; 1.48]
Number of children (zero)1.52*
[1.01; 2.21]
Number of wives2.76
[0.88; 8.79]
Number of children1.28
[0.90; 1.78]
AIC92.0888.4729.6727.35
Log likelihood−41.04−39.23−12.83−11.67
Number of observations29242924
BIC98.9194.3536.0833.38
χ214.286.146.462.01
P value<0.0010.0460.030.15
  • Point estimates and 95% confidence intervals are incident rate ratios.

  • * Indicates statistical significance when 1 lies outside the bootstrap (10k) 95% confidence intervals (displayed in brackets).