Table 8. Mean passing distance (in metres) by helmet wearing for intervals created using various cut points.

	Helmet		No Helmet
Passing distance	mean	n	mean	n	p-value*
[0,0.75)	0.66	7	0.61	6	0.556
[0.75,1.0)	0.90	53	0.90	43	0.924
[1.0,1.5)	1.29	524	1.30	469	0.465
[1.5,2.0)	1.70	455	1.72	508	0.103
[2.0, ∞)	2.22	110	2.29	180	<0.001

^*contrasts from 2×5 ANOVA.