Table 3.

An overview of the interobserver agreement between trauma surgeons on conventional radiology versus 3D printed models

Classification	κ for conventional radiology	Agreementa	κ for the 3D model	Agreementa	Difference in κ (95% CI)	p value
Schatzker	0.576	Moderate	0.556	Moderate	0.020 (-0.032 to 0.073)	0.44
AO/OTA	0.426	Moderate	0.338	Fair	0.088 (0.053 to 0.123)	< 0.001
Luo three-column	0.506	Moderate	0.555	Moderate	-0.048 (-0.105 to 0.009)	0.09

^aAgreement proposed by Landis and Koch [10].