Table 3.

Minimum adequate model for effect of group sizes and body mass difference (focal-opponent group) on focal group attrition.

AIC = 502.1
random effects	variance	s.d.
dyad	0.028	0.168
fixed effects	estimate	s.e.	z value	p
intercept	−1.066	0.141	−7.564	<0.0001
body mass difference	−0.176	0.034	−5.213	<0.0001
opponent group = 10	0.090	0.145	0.622	0.533
opponent group = 20	0.117	0.158	0.742	0.458
body mass difference × opponent group = 10	−0.030	0.049	−0.612	0.540
body mass difference × opponent group = 20	−0.182	0.051	−3.557	<0.001