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. Author manuscript; available in PMC: 2015 Apr 4.
Published in final edited form as: J Thorac Cardiovasc Surg. 2012 Jun 15;144(4):882–895. doi: 10.1016/j.jtcvs.2012.05.019

TABLE 4.

Association of shunt type with transplant-free survival within the 4 groups: CPR, ECMO, E-CPR and neither intervention (none)

Hazard
ratio		 95% CI P Interaction
P*
Without adjustment
   MBTS vs RVPAS
      CPR 1.28 (0.89, 1.84) .94 .48
      ECMO 0.82 (0.43, 1.58) .55 .15
      E-CPR 0.62 (0.28, 1.36) .23 .06
      None 1.42 (0.98, 2.06) .07
Adjustment for birth weight and surgeon
   MBTS vs RVPAS
      CPR 1.3 (0.54, 3.16) .56 .74
      ECMO 0.67 (0.33, 1.36) .26 .05
      E-CPR 0.48 (0.21, 1.11) .09 .01
      None 1.54 (1.04, 2.28) .03

ECMO, Extracorporeal membrane oxygenation; CPR, cardiopulmonary resuscitation; E-CPR, ECMO required to restore circulation during CPR; CI, confidence interval; MBTS, modified Blalock-Taussig shunt; RVPAS, right ventricle–pulmonary artery shunt.

*

P value from test of interaction of shunt type and therapy group versus none.