Quantitative Evaluation of Articular Involvement of Posterior Malleolus Associated with Operative Indication: A Comparative Study of Six Methods Based on Radiography and CT
Table 4
Inter- and intraobserver agreement for fracture involvement determined using six measurement methods.
Examiner
Plain radiographs
Axial CT linear
Sagittal CT linear
Axial CT plane
3D CT linear
3D CT surface
Chief-chief
0.82 (0.74–0.87)
0.89 (0.85–0.93)
0.88 (0.83–0.92)
0.92 (0.88–0.94)
0.91 (0.88–0.94)
0.94 (0.92–0.96)
Attending-attending
0.77 (0.68–0.84)
0.92 (0.88–0.94)
0.85 (0.78–0.89)
0.96 (0.94–0.97)
0.91 (0.87–0.94)
0.95 (0.93–0.97)
Resident-resident
0.46 (0.30–0.60)
0.90 (0.86–0.93)
0.82 (0.75–0.88)
0.94 (0.91–0.96)
0.88 (0.82–0.91)
0.91 (0.88–0.94)
Chief-attending
0.41 (0.24–0.55)
0.79 (0.70–0.85)
0.73 (0.63–0.81)
0.66 (0.53–0.75)
0.84 (0.78–0.89)
0.95 (0.93–0.97)
Chief-resident
0.43 (0.26–0.57)
0.68 (0.56–0.77)
0.52 (0.37–0.65)
0.70 (0.59–0.78)
0.81 (0.74–0.87)
0.95 (0.93–0.97)
Attending-resident
0.67 (0.55–0.76)
0.70 (0.59–0.79)
0.59 (0.45–0.70)
0.60 (0.46–0.71)
0.83 (0.76–0.88)
0.90 (0.86–0.93)
Values are presented as intraclass correlation coefficient values with 95% confidence interval; agreement was divided into 6 levels, including almost perfect (0.81 to 1.00), substantial (0.61–0.80), moderate (0.41 to 0.60), fair (0.21 to 0.40), slight (0.00 to 0.20), and poor (below 0.00).
