Table 4.

Risk behaviour index and road safety knowledge index associated with odds of reported road traffic injury among 3747 students, Guangzhou City, China

		Injury (n = 403)		Non-injury (n = 3345)
Variable		n	%	n	%	OR (95% CI)†
Knowledge index	3747
Low	1894	288	15.20	1606	84.80	2.93 (2.18 to 3.93)**
Medium	1234	93	7.50	1141	92.50	1.53 (1.11 to 2.11)**
High	620	22	3.50	598	96.50	Reference
Risk behaviour index—cycling	2049
Low	1575	227	14.40	1348	85.60	Reference
Medium	285	45	15.80	240	84.20	1.06 (0.72 to 1.56)
High	189	47	24.90	142	75.10	1.84 (1.23 to 2.74)**
Risk behaviour index—walking	3684
Low	2955	280	9.50	2675	90.50	Reference
Medium	439	58	13.20	381	86.80	1.65 (1.19 to 2.29)**
High	290	56	19.30	234	80.70	2.45 (1.73 to 3.48)**
Risk behavior index—total	3747
Low	2816	266	9.40	2550	90.60	Reference
Medium	565	71	12.60	494	87.40	1.42 (1.05 to 1.93)**
High	366	66	18.00	300	82.00	2.04 (1.47 to 2.84)**

^*p Value <0.05 from χ² significance test,

^**p value <0.01 from significance test.

^†Controlled for sex, region, grade, living arrangement, main transportation and mother’s education.