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. Author manuscript; available in PMC: 2013 May 1.

Published in final edited form as: J Adolesc Health. 2012 Feb 3;50(5):497–502. doi: 10.1016/j.jadohealth.2011.09.018

Table 3.

Regression coefficients (SE) and p-values from mixed models for weight relative fitness (n=786)

	Model 1	Model 2		Model 3		Model 4		Model 5
	Null model	Demographic variables and sedentary blocks		Commercial PA^a facilities added		Sport participation added		VPA added
Independent Variables		b (SE)	p	b (SE)	p	b (SE)	p	b (SE)	p
Group, Control versus intervention		−.05 (.32)	.89	−.09 (.30)	.76	−.16 (.30)	.60	−.18 (.28)	.54
Age, years		.14 (.19)	.47	.14 (.19)	.46	.25 (.19)	.18	.24 (.18)	.19
Race, White versus Black		.43 (.26)	.10	.50 (.26)	.05	.43 (.25)	.09	.35 (.25)	.16
BMI, kg/m²		−.29 .02)	<.001	−.29 (.02)	<.001	−.28 (.02)	<.001	−.27 (.02)	<.001
Parent education, <HS versus ≥ HS		−.21 (.25)	.40	−.19 (.25)	.43	−.07 (.24)	.78	−.07 (.24)	.77
Median HH^b income		0 (0)	.93	0 (0)	.93	0 (0)	.89	0 (0)	.68
Sedentary blocks		−.11 (.03)	.001	−.11 (.03)	.001	−.10 (.03)	.002	−.09 (.03)	.003
Commercial PA facilities 1 or more versus 0				1.06 (.26)	<.001	.99 (.26)	<.001	.88 (.26)	.001
Sports participation, yes						1.30 (.23)	<.001	1.06 (.23)	<.001
VPA, 1 or more 30-minute blocks versus 0 blocks								1.20 (.24)	<.001
R²^c	.100	.485		.496		.526		.546
R²^d	-	.587		.729		.704		.760

^a

PA= physical activity

^b

HH=household

^c

Goodness-of- fit [22]

^d

Between-subject variance that is explained by independent variables compared to null model [23]