Table 2.

Associations between suicidal thoughts and demographic characteristics

Variables	Univariate OR (95% CI)	P Value	Multivariatea OR (95% CI)	P Value
Gender(female)	1.42(1.25, 1.62)	<0.001	1.89(1.59,2.23)	<0.001
Grade(Senior)	0.99(0.87, 1.12)	0.870	0.67(0.56,0.79)	<0.001
Smoking(Yes)	1.97(1.71,2.27)	<0.001	1.97(1.63,2.37)	<0.001
Academic achievement
Good	1.00	-	1.00	-
Average	1.12(0.97, 1.30)	0.120	0.93(0.79,1.11)	0.450
Below average	1.64(1.38, 1.94)	<0.001	1.10(0.89,1.36)	0.390
Living arrangement
Two biological parents	1.00	-	1.00	-
Biological father or mother	1.76(1.46, 2.12)	<0.001	1.18(0.82,1.70)	0.370
Others	1.53(1.29, 1.81)	<0.001	0.97(0.77,1.21)	0.790
Family socioeconomic status
High	1.00	-	1.00	-
Average	0.69(0.53,0.89)	0.005	0.76(0.55,1.05)	0.100
Low	1.06(0.80,1.41)	0.680	0.89(0.62,1.28)	0.550
Relationship with parents
Good	1.00	-	1.00	-
Average	2.45(1.97,3.05)	<0.001	1.61(1.26,2.05)	<0.001
Poor	3.95(2.55,6.11)	<0.001	1.84(1.12,3.03)	0.020
Relationship with classmates
Good	1.00	-	1.00	-
Average	1.56(1.37,1.78)	<0.001	1.28(1.08,1.50)	0.003
Poor	3.59(2.65,4.86)	<0.001	1.79(1.23,2.63)	0.003
Feelings about school
Good	1.00	-	1.00	-
Average	1.97(1.72,2.25)	<0.001	1.41(1.19,1.67)	<0.001
Bad	3.89(3.09,4.90)	<0.001	1.77(1.32,2.38)	<0.001
Anorexia nervosa
Never	1.00	-	1.00	-
Occasionally	1.57(1.33,1.85)	<0.001	1.21(0.99,1.46)	0.050
Sometimes	2.21(1.79,2.72)	<0.001	1.25(0.97,1.61)	0.080
Often	3.99(2.92,5.44)	<0.001	1.94(1.32,2.85)	0.001
Strategies for conflict(Struggle)	1.57(1.34,1.81)	<0.001	1.34(1.12,1.59)	0.001
Depression(yes)	6.58(5.75,7.53)	<0.001	5.04(4.31,5.90)	<0.001

CI confidence interval, OR odds ratio

^aAdjusted for potential confounders, including gender, grade, smoking, academic achievement, living arrangement, SES, relationship with parents and classmates, feeling about school, strategies for conflict and depression