3D printing for congenital heart disease: a single site’s initial three-yearexperience

3D Printing in Medicine

Table 5 ANOVA tables for the effect of anatomical model in planning for truncus cases. Response variable is case length of time

Case length of time (anatomical model vs Traditional Planning): Truncus
Source	D.F.	Adj. S.S.	Adj. M.S.	F-Value	P-Value
3DP	1	11,267	11,267	1.47	0.271
Error	6	45,959	7660
Total	7	57,226
Planning	N	Mean (minutes)	St.Dev	95 C.I.
SoC	6	321.7	95.9	(234.2, 409.1)
3DP	2	235.00	1.41	(83.57, 386.43)

Case length of time’s Cohen’s d effect size was very large (1.278) suggesting a practical difference between SoC and 3DP case length of time for Truncus patient cases. Similar to the DORV patients, this very large effect size strongly suggests the poor p-value may be related to the study population size, not the variance or mean difference

ISSN: 2365-6271