Table 4 Regression analysis
ModelSlopeAdjusted R2P-value
A: log(Sd,1) ∼ log(Ne,2)1.90 (1.64, 2.16)0.70<0.001
B: log(sd,2) ∼ log(Ne,2)0.88 (0.63, 1.13)0.34<0.001
C: log(Sd,1) ∼ log(Ne,2) + log(sd,2)Ne: 1.35 (0.98, 1.50)0.81<0.001
sd: 0.63 (0.46, 0.80)
A’1.42 (1.29, 1.58)0.40<0.001
B’0.52 (0.01, 1,02)0.08<0.05
C’Ne: 1.02 (0.57, 1.48)0.63<0.001
sd: 0.68 (0.36, 0.85)
  • A’, B’, and C’ refer to the models with only humans, bonobos, western chimpanzees, and central chimpanzees for direct comparison with the simulated data (see Supplemental Analyses). Values in parentheses are bootstrap 95% CI.