Table 5b.

Multivariate analysis of factors associated with VO2max in subjects with Fontan physiology

n=75	Beta	95% CI	p
Habitual activity (per 10 hours)	−2.8	−13.5 to 7.8	0.60
Age (per year)	−4.0	−6.6 to −1.4	0.003
Male sex	−6.6	−18.9 to 5.6	0.28
Systemic ventricle
Right	1	n/a	n/a
Left	6.6	−10.1 to 23.4	0.43
Both	−0.9	−33.6 to 31.7	0.95
Heterotaxy	−14.7	−41.9 to 12.5	0.28
Stage 1 operation
Norwood with modified BT shunt	1	n/a	n/a
Norwood with RV to PA conduit	−3.5	−31.6 to 24.5	0.80
Shunt without arch reconstruction	7.1	−10.7 to 24.9	0.43
No operation	2.4	−11.5 to 16.2	0.74
Other	−11.4	−64.1 to 41.4	0.67
Fontan operation
Extra-cardiac Fontan	1	n/a	n/a
Lateral tunnel Fontan	−2.7	−16.3 to 10.9	0.70
Hepatic vein inclusion	8.5	−31.0 to 48.1	0.67
Protein losing enteropathy	−9.0	−32.9 to 14.9	0.46

Abbreviations: BT shunt: Blalock-Taussig shunt, RV to PA: right ventricle to pulmonary artery