Table 1.

ANCOVA statistics for regression of EV versus MZW for wild versus domestic cattle. Logged data. Adj. R² = 0.73, F-statistic = 437, DF_2,314, p-value < 0.001. CI = 95% confidence interval. Interactive ANCOVA (slope difference) p-value = 0.982. BH = Benjamini–Hochberg multi-test correction.

	intercept coefficient	CI	s.e.	t-value	p-value	pairwise Wilcoxon (BH) test p-value	brain reduction
wild intercept	−0.6317	−0.9890 to −0.2745	0.181	−3.48	<0.001	<0.001	—
intercept difference	−0.1282	−0.1710 to −0.0854	0.022	−5.89	<0.001	<0.001	25.6%