Table 2.

Comparison of baseline scores of congenital heart disease anatomy knowledge, scores of theoretical knowledge of atrial septal defect (ASD) after class between the 2 groups of nursing students (point, [$\overline{\text{x}}$ ± s]).

	3D printing group	Traditional group
Observation indices	n = 66	n = 66	t value	P value
Baseline scores of anatomical knowledge for congenital heart disease.	(4.11 ± 1.40)	(3.80 ± 1.24)	1.32	.09
Scores of ASD class knowledge examination.	(7.08 ± 1.66)	(6.56 ± 1.17)	2.08	.02