Table 2.

Multivariate model of risk factors for combined outcome (random intercept, with interaction between age category and prematurity)

	Odds Ratio	95% CI	p
Age
0 to 30 days with prematurity	4.95	1.30-18.86	0.02
0-30 days without prematurity	1.63	0.84-3.17	0.15
30 days to 1 year with prematurity	0.99	0.45-2.20	0.99
30 days to 1 year without prematurity	1.61	1.14-2.28	0.007
1-8 years	1	n/a	n/a
8-18 years	0.45	0.27-0.75	0.002
>18 years	0.48	0.17-1.38	0.17
Race
White	1	n/a	n/a
Black or African-American	0.71	0.44-1.17	0.18
Asian	0.75	0.32-1.76	0.51
Other	0.86	0.56-1.31	0.48
Missing	1.63	0.95-2.79	0.08
Payor
Private insurance	1	n/a	n/a
Public insurance	0.63	0.45-0.88	0.006
Other	0.81	0.53-1.24	0.32
Diagnosis
IPAH	1	n/a	n/a
APAH-CHD	1.32	0.82-2.12	0.25
PAH with cardiomyopathy	1.52	0.75-3.12	0.25
PAH with orthotopic heart transplant	2.62	1.28-5.35	0.008
Chronic thromboembolic pulmonary hypertension	0.95	0.12-7.34	0.96
Genetic syndrome	0.93	0.65-1.33	0.69
Non-cardiac structural anomaly	1.06	0.71-2.91	0.77
Cardiac operation prior to catheterization	2.57	1.28-5.35	<0.001
Pre-procedural medical care
Mechanical ventilation	0.79	0.54-1.17	0.24
Hemodialysis	19.40	5.50-68.40	<0.001
Inotropic agents	1.06	0.71-1.58	0.82
Systemic vasodilators	1.85	1.18-2.91	0.007
Pulmonary vasodilators	0.38	0.22-0.64	<0.001
Intervention during procedure	0.69	0.48-0.99	0.04

Adjusted risk of composite outcome is 3.3% (95% CI:1.9-5.5%).

Akaike information criteria: 1802