Table 2.

Pre- and post-test increase in score (out of 20) in the control and printing groups for each CHD

Group	Control	Printing	p-value
ASD	3.5 ± 0.4	4.9 ± 0.3	0.01
VSD	2.7 ± 0.4	4.1 ± 0.5	0.02
CoA	4.6 ± 0.4	5.8 ± 0.4	0.03
ToF	1.5 ± 0.3	3.0 ± 0.2	< 0.0001

ASD Atrial septal defect, CoA Coarctation of the aorta, CHD Congenital heart defects, ToF Tetralogy of Fallot, VSD Ventricular septal defect