Table 3. Association between being various exposures and having a serious injury in the past year.

Exposure	Boys			Girls
	Percentage of injured with exposure	Percentage of non-injured with exposure	OR (95% CI)	Percentage of injured with exposure	Percentage of non-injured with exposure	OR (95% CI)
Bullied one or more days during the past 30 days	57.1	22.9	4.5 (3.7, 5.7)	53.4	32.3	2.4 (1.8, 3.2)
In a physical fight one or more times during the past 12 months	62.7	42.2	2.3 (1.6, 3.3)	58.0	36.8	2.3 (1.9, 2.9)
Physically attacked one or more times during the past 12 months	51.2	30.7	2.4 (1.8, 3.1)	49.3	30.1	2.3 (1.7, 3.0)
Walked or biked to or from school one or more days in the past seven days	54.8	31.4	2.6 (2.2, 3.2)	32.6	22.1	1.7 (1.1, 2.7)
Missed class or school one or more days without permission in past 30 days	58.3	38.6	2.2 (1.6, 3.0)	47.2	37.7	1.5 (1.1, 2.0)
Washed hands after using the toilet or latrine only sometimes, rarely, or never during the past 30 days	28.5	21.8	1.4 (1.2, 1.7)	13.8	10.8	1.3 (0.8, 2.1)
Ate food from a fast food restaurant three or more days during the past seven days	78.1	63.5	2.1 (1.6, 2.7)	66.9	59.6	1.4 (1.0, 1.9)
Went hungry sometimes, most of the time, or always because there was no enough food at home during the past 30 days	38.7	25.5	1.8 (1.5, 2.3)	28.2	17.6	1.8 (1.3, 2.6)
Students in school were never or rarely helpful or kind during the past 30 days	44.2	31.5	1.7 (1.4, 2.1)	25.2	19.0	1.4 (1.0, 2.1)
Drank carbonated drinks one or more times per day in the past 30 days	65.1	48.4	2.0 (1.6, 2.5)	49.0	42.1	1.3 (0.9, 1.9)
Not physically active for at least 60 minutes on any day in the past week	22.4	28.9	0.7 (0.6, 0.9)	24.0	37.3	0.5 (0.4, 0.8)

OR: odds ratio; CI: confidence interval.