Effect of motorcycle helmet types on head injuries: evidence from eight level-I trauma centres in Taiwan

BMC Public Health

Table 4 Odds of severe injuries (ISS ≥ 8) sustained by motorcyclists

Variable	β	Standard Error	Odds Ratio	95% CI	P value
Helmet type
1. Nonstandard helmet	0.2625	0.1157	1.300	1.036–1.631	0.0241
2. Standard helmet	1
Age
1. ≥ 65	0.7496	0.2838	2.116	1.213–3.690	0.0083
2. Other age group	1	0.2838	2.116	1.213–3.690	0.0083
Crash type
1. Multiple vehicle	0.4379	0.1778	1.549	1.093–2.196	0.0138
2. Single vehicle	1	0.1778	1.549	1.093–2.196	0.0138
Drunk riding
1. Yes (BAC level > 0.03%)	0.3606	0.1378	1.434	1.094–1.879	0.0091
2. No (BAC level ≤ 0.03%)	1	0.1378	1.434	1.094–1.879	0.0091
Using a mobile phone
3. Yes	0.9910	0.3322	2.694	1.405–5.167	0.0064
4. No	1

ISSN: 1471-2458