Gender differences in self-harm and drinking behaviors among high school students in Beijing, China

BMC Public Health

Table 2 Association analyses between self-harm and drinking behaviors (include age)

Risk Factors	Total	Girls	Boys	Interaction term^d p
Risk Factors	AORs	AORs	AORs	Interaction term^d p
Age^a
12 ~ 15	1.311 (1.240, 1.385)	1.507 (1.394, 1.629)	1.134 (1.041, 1.227)	< 0.001
Drink condition^b
Non-recent alcohol use	1.680 (1.492, 1.892)	2.211 (1.979, 2.471)	1.636 (1.451, 1.844)	0.002
Recent alcohol use	2.187 (1.942, 2.464)	3.400 (3.054, 3.786)	2.122 (1.882, 2.393)	< 0.001
Binge drinking	4.106 (3.670, 4.594)	6.357 (5.707, 7.080)	3.924 (3.498, 4.401)	< 0.001
Age of First Drink^c
< 13	1.854 (1.714, 2.006)	2.565 (2.376, 2.770)	1.863 (1.721, 2.016)	< 0.001

^a Controlling settings and school type, compared with the 16 ~ 19 age group
^b Controlling setting, school type and age, compared with no alcohol use. Drinking condition was a variable defined in the Methods section to describe the alcohol use of participants
^c Controlling setting, school type and age, compare with ≥13
^d Interaction between gender and the risk factors listed

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