Table 2.

Likelihood of dependent and independent models of correlated evolution between baculum presence and intromission duration in primates. The Bayes factor indicates positive support for the dependent model of evolution over the independent model. Bayes factors were interpreted following Kass et al. [30]: O–2, minimal support; 2–6, positive support; 6–10, strong support; more than 10, very strong support.

	dependent model	independent model
coevolution analysis	log likelihood	log likelihood	log natural Bayes factor
intromission duration	−45.77	−48.16	4.78