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Table 1 Preoperative patients’ data (continuous variables are presented as mean, standard deviation and range and categorical data as number and percent) (RVOT right ventricular outflow tract)

From: Primary versus staged repair of Fallot with borderline pulmonary artery anatomy

 Group A
(n = 120)
Group B
(n = 100)
p value
Age (months)
 Range3.5–98–14 
 Mean ± SD7 ± 3.111 ± 2.6< 0.001
Weight (kg)
 Range4–8.58.3–14 
 Mean ± SD6.8 ± 2.29 ± 3.1< 0.001
 Male66 (55%)60 (60%)0.455
McGoon ratio1.5 ± 0.081.61 ± 0.07 
 Mean ± SD  < 0.001
O2 saturation (%)
 Range60–9276–88< 0.001
 Mean ± SD74 ± 1282 ± 4.3 
Pressure gradient across RVOT (mmHg)
 Range67–9071–1050.008
 Mean ± SD81.6 ± 6.384.5 ± 9.3