Journal of Obesity

Research Article

The Trajectory and the Related Physical and Social Determinants of Body Mass Index in Elementary School Children: Results from the Child and Adolescent Behaviors in Long-Term Evolution Study

Table 4

Factors associated with BMI development trajectory groups in boys and girls.


	Boys¹			Girls²
Variable	Overweight becoming obese	Persistently obese	Variable	Persistently overweight	Persistently obese
Variable	OR	OR	Variable	OR	OR

After school exercise			Television viewing or computer use
Low becoming high/persistently high	1.08	2.47	Persistently medium/persistently low level	1.41	1.96
Persistently low/persistently high	1.14	3.76**	Persistently high level/persistently low level	2.26*	4.03*
Self-perceived academic performance			Family interactions
Low satisfaction/high satisfaction	1.36	2.30*	Persistently medium level/persistently low level	1.72*	1.21
			Persistently high level/persistently low level	1.39	1.06
Family interactions			Peer interactions
Low becoming medium/persistently low	1.41	2.14	Medium becoming high/persistently high	1.02	1.49
Medium becoming low/persistently low	1.52	0.66	High becoming low/persistently high	1.23	2.22*
Persistently high/persistently low	2.32*	2.02
Parent’s overweight			Parent’s overweight
Father overweight/neither parent overweight	1.71	4.23*	Father overweight/neither parent overweight	1.75*	1.42
Mother overweight/neither parent overweight	2.56	4.68*	Mother overweight/neither parent overweight	1.55	1.11
Both parents overweight/neither parent overweight	1.53	8.22**	Both parents overweight/neither parent overweight	2.31**	6.84***
Father’s education level
Senior high school/junior high school and below	0.68	0.70
College and above/junior high school and below	0.44*	0.50

The OR in boys has been adjusted for after-school exercise, self-perceived academic performance, family interactions, peer interactions, parent’s overweight, and father’s education level. Reference group: persistently normal weight.
²The OR in girls has been adjusted for television viewing or computer use, family interactions, peer interactions, and parent’s overweight. Reference group: persistently normal weight.
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