Table 1.

GLMM to investigate factors affecting mating propensity of male mice, which is significantly influenced by both female familiarity and female mating status

Fixed effects	Estimate ± standard error	ΔAIC	χ2	P
(intercept)	−0.12±0.20
Familiarity	0.92±0.38	4.08	5.97	0.014
Mating history	−0.93±0.48	2.26	4.27	0.045

AIC, Akaike information criterion. The analysis is based on data from 174 pairings (85 matings) involving 11 subject males, with male ID fitted as a random effect and a binomial error distribution. The final model revealed 2 predictors of male mating propensity: males are significantly more likely to mate with unfamiliar females (“familiarity” effect) but significantly less likely to mate with previously mated females (“female mating history” effect).