Table 3.

Helmet impact metric correlations with the $L^{\infty }$ norm.

Metric	HIM	Bandwidth 3		Bandwidth 5		Bandwidth 10		Bandwidth 15
		c.c	Adjusted p value	c.c	Adjusted p value	c.c	Adjusted p value	c.c	Adjusted p value
Mean	LA	0.1303	0.8239	0.0640	0.8946	− 0.0224	0.9416	− 0.0126	0.9611
	RA	0.2282	0.8239	− 0.1051	0.8692	− 0.1615	0.6151	0.1724	0.4544
	HIC15	0.1434	0.8239	0.0487	0.9188	− 0.1959	0.4992	− 0.0301	0.9422
	GSI	0.1522	0.8239	0.1155	0.8692	− 0.0794	0.8589	− 0.0099	0.9611
	HITsp	0.0345	0.8916	− 0.1221	0.8692	− 0.0383	0.9070	0.2633	0.2391
Peak	LA	0.0854	0.8239	0.0279	0.9188	− 0.0684	0.8744	0.1527	0.5033
	RA	0.1856	0.8239	0.0328	0.9188	− 0.1067	0.7662	0.1467	0.5052
	HIC15	0.1861	0.8239	0.1582	0.8692	− 0.0487	0.9070	0.2113	0.3490
	GSI	0.1927	0.8239	0.1959	0.8692	− 0.0082	0.9678	0.2452	0.2709
	HITsp	0.0810	0.8239	0.0197	0.9213	− 0.0443	0.9070	0.2742	0.2251
CUW	LA	0.1450	0.8239	0.2124	0.8692	0.5556	0.0412	0.6256	0.0049
	RA	0.1407	0.8239	0.1845	0.8692	0.5238	0.0412	0.6327	0.0049
	HIC15	0.1680	0.8239	0.1856	0.8692	0.4592	0.0555	0.5747	0.0077
	GSI	0.1872	0.8239	0.2047	0.8692	0.4811	0.0515	0.5692	0.0077
	HITsp	0.1319	0.8239	0.1856	0.8692	0.5468	0.0412	0.6300	0.0049
TBH	LA	0.1987	0.8239	0.1609	0.8692	0.3689	0.1605	0.5665	0.0077
	RA	0.1954	0.8239	0.1363	0.8692	0.3372	0.1843	0.5364	0.0101
	HIC15	0.2950	0.8239	0.1067	0.8692	0.2167	0.4445	0.5222	0.0113
	GSI	0.2879	0.8239	0.1144	0.8692	0.2271	0.4305	0.5052	0.0144
	HITsp	0.1658	0.8239	0.1352	0.8692	0.3514	0.1684	0.5868	0.0077
TUA	LA	0.0903	0.8239	0.1286	0.8692	0.5161	0.0412	0.5599	0.0077
	RA	0.0750	0.8239	0.0854	0.8692	0.4669	0.0555	0.5506	0.0084
	HIC15	0.0980	0.8239	0.0925	0.8692	0.3623	0.1605	0.4915	0.0161
	GSI	0.1253	0.8239	0.1341	0.8692	0.4122	0.1007	0.5238	0.0113
	HITsp	0.0722	0.8239	0.1089	0.8692	0.4915	0.0515	0.5594	0.0077
TBH + TUA	LA	0.0564	0.8306	− 0.0350	0.9188	0.2485	0.4305	0.4707	0.0206
	RA	0.0624	0.8306	− 0.0777	0.8692	0.2326	0.4305	0.4702	0.0206
	HIC15	0.1308	0.8239	− 0.0843	0.8692	0.1264	0.7139	0.4308	0.0364
	GSI	0.1040	0.8239	− 0.0772	0.8692	0.1253	0.7139	0.4056	0.0497
	HITsp	0.0159	0.9368	− 0.0881	0.8692	0.2403	0.4305	0.4975	0.0155

“c.c” is the Spearman rank correlation coefficient (ρ). Bold values signify significant correlations (adjusted p value < 0.05).

LA linear acceleration, RA rotational acceleration, HIC15 head impact criterion 15, GSI Gadd Severity Index, HITsp helmet impact technology severity profile.