Table 2:

Univariate and multivariate analyses of subject factors associated with BMI

	Univariate		Multivariate
	Beta (95% CI)	p	Beta (95% CI)	p
Exercise duration (per hour/week)	−0.13 (−0.24 to −0.03)	0.01	−0.06 (−0.15 to 0.04)	0.23
Age (per year)	0.61 (0.45 to 0.79)	<0.001	0.5 (0.3–0.7)	<0.001
Sex
Female	1	n/a	1	n/a
Male	−1.03 (−2.2 to 0.2)	0.09	−1.1 (−2.2 to 0.02)	0.05
Diagnosis
Tetralogy of Fallot	1	n/a	1	n/a
TGA	−1.5 (−3.5 to 0.5)	0.14	−1.1 (−2.9 to 0.6)	0.21
Fontan	−1.0 (−2.3 to 0.3)	0.13	−0.9 (−2.1 to 0.3)	0.15
Race
White	1	n/a
Black	−0.4 (−2.6 to 1.8)	0.74
Other	−0.2 (−2.6 to 1.9)	0.87
Level of restriction
Unrestricted	1	n/a	1	n/a
Moderate	−0.5 (−1.8 to 0.7)	0.42	−0.3 (−1.5 to 0.9)	0.61
Mild	2.0 (0.3 to 3.8)	0.02	1.5 (−0.2 to 3.2)	0.08
No activity	1.8 (−3.8 to 7.5)	0.52	0.9 (−4.1 to 5.9)	0.73
Exercise class
I (minimally strenuous)	3.7 (0.6 to 6.8)	0.02
II	1.7 (−0.1 to 3.5)	0.07
III	0.1 (−1.2 to 1.5)	0.85
IV (very strenuous)	1	n/a

The associated changes represented by beta for each covariate are measured in kgm⁻².