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Table 1 ANOVA table illustrating the effect of anatomical model-based planning on case length of time. Green cells illustrate the lower, preferred mean time for surgeries planned with an anatomical model. Anatomical models are abbreviated as 3DP. Abbreviations: D.F. is degrees of freedom, Adj. S.S. is adjusted sum of squares, Adj. M.S. is adjusted mean squares, St.Dev is standard deviation, and C.I. is confidence interval

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

Case length of time (anatomical model vs Traditional Planning): all included patients

Source

D.F.

Adj. S.S.

Adj. M.S.

F-Value

P-Value

 3DP

1

1916

1916

0.18

0.674

 Error

144

1,557,292

10,815

  

 Total

145

1,559,208

   

Planning

N

Mean (minutes)

St.Dev

95 C.I.

 

 SoC

113

229.33

101.81

(209.99, 248.66)

 

 3DP

33

220.7

111.3

(184.9, 256.4)

 
  1. Case length of time’s Cohen’s d effect size was small (0.081) suggesting no practical difference between SoC and 3DP case length of time for all patient cases