Statistical analysis of neonatal outcome <1500 g.

<p>Fig 2 shows outcome of neonates <1500 g for different types of cerclage as well as for birth weight matched controls (n_control = 373; n_PEIC = 20; n_UIC = 10, n_HIC = 12). <b>A-C</b> Neonates after PEIC show significantly impaired respiratory outcome when compared to corresponding controls (Total ventilation, p = 0.01; CPAP ventilation (continuous positive airway pressure), PEIC: p = 0.01; UIC: p = 0.04; Maximal fraction of inspired oxygen (FiO₂ max), p = 0.01 bars represent means). <b>D</b> Neonates after PEIC are also at higher risk for severe neonatal complications (intraventricular hemorrhage, IVH ≥ II, OR 6.54, 95% CI: 2.11–18.23, p = 0.0007; retinopathy of prematurity, ROP ≥ 2, OR 5.76, 95% CI: 2.04–20.98, p = 0.0028). ^<b>1</b> due to low case numbers, odds ratios are not applicable; <b>*</b> indicates significant values, p<0.05.