Table 1.

Summary of mixed-effects model describing biomechanical effects on bgPC axis. All fixed effects listed below were included in the overall best-fit model that described variation along the Laetoli–modern human bgPC axis. The p-values describe the significance of the independent effects, given the presence of the other effects in the model.

	value	s.e.	p-value
intercept	−0.2375	0.1328	0.0820
relative medial forefoot pressure	−0.2188	0.1227	0.0827
hip angle at foot strike	−0.3022	0.1534	0.0565
knee angle at foot strike	0.3332	0.1538	0.0368