Interobserver and intraobserver agreement for Letournel acetabular fracture classification system using 3-dimensional printed solid models

Table 3 Intra-observer agreement on classification and surgical approach, between computed tomography and 3-dimensional printed models

#Surgeon		Fx classification					Surgical approach
1	1	-0.02					0.70
2	1	0.50					0.18
3	1	0.50					0.32
4	1	0.50					0.55
5	1	0.83					0.36
6	1	0.48					0.28
7	1	0.32					0.77
8	1	0.66					0.34
9	1	0.67					0.22
10	1	0.22					0.40
11	1	0.50					0.58
12	1	0.49					0.25
13	1	0.66					1.00
14	1	0.50					0.70
15	1	0.64					0.15
16	1	0.48					0.19
17	1	0.32					0.16
18	1	0.35					0.19
		Mean	Median	Min	Max	P value	Mean	Median	Min	Max	P value
Total	18	0.48	0.50	-0.02	0.83	0.592	0.41	0.33	0.15	1.00	0.331
Pelvis	9	0.45	0.50	-0.02	0.83		0.37	0.25	0.15	1.00
Trauma	9	0.50	0.50	0.22	0.67		0.45	0.36	0.18	0.77