TABLE 3

Proportion of Spontaneous and Medically Induced PTB (<37 wk) for Newborns With CHD

CHDnSpontaneous PTBsMedically Induceda PTBsPc
%95% CIb%95% CIb
All cases21899.78.5–11.03.72.9–4.6<.001
Cases without chromosomal anomalies20558.87.6–10.13.62.8–4.5
Cases without chromosomal and/or anomalies of other systemsd17707.86.6–9.23.52.7–4.5
Cases without chromosomal and/or anomalies of other systems, excluding isolated VSD66712.09.6–14.75.43.8–7.4
French NPS of 200318153.93.1–4.93.32.5–4.2
  • a PTB after induction of labor or cesarean delivery before labor.

  • b 95% binomial exact CI.

  • c P value for the overall χ2 test comparing the proportions of spontaneous preterm, medically induced PTB and term births for newborns with CHD versus that of the general population (French NPS of 2003).

  • d Structural defects other than CHD.