Table 2.

Inter-birth Intervals Are Affected by Neighbor Pressure, Number of Mature Males, and Group Size

Terms	χ2	p	95% CI
Intercept			1,584, 1,783
Food availabilitya,b	0.492	0.482	−52.67, 104.32
Number of individualsa,b	5.590	0.018c	56.17, 196.50c
Number of malesa,b	5.860	0.015c	−209.04, −43.68c
Neighbor pressurea,b	4.344	0.037c	20.87, 153.85c
Sex infant maled	5.598	0.017c	72.63, 376.36c
Age of motherb,d	0.282	0.595	−46.06, 99.15
Rank of motherb,d	0.200	0.654	−86.70, 56.36

The results correspond to a reduced LMM not including the interactions (see text). Means and SD of z-transformed variables and variance components of the random effects and residuals are given in Table S4. Food availability is multiplied by each group territory size. See also Table S4.

^aTest predictors.

^bz-transformed.

^c95% CIs and p values indicating a statistically significant effect.

^dControl predictors.