Table 3.

Interobserver agreement in the assessment of fracture characteristics shown as kappa (κ) and agreement rates (AR)

Dorsal fracture
	Surg1	Surg2	Surg3
Surg4	κ 0.60, AR 78%	κ 0.57, AR 77%	κ 0.67, AR 82%
Surg1		κ 0.44, AR 69%	κ 0.64, AR 80%
Surg2			κ 0.64, AR 80%
Ventral fracture
	Surg1	Surg2	Surg3
Surg4	κ 0.55, AR 88%	κ 0.56, AR 90%	κ 0.43, AR 86%
Surg1		κ 0.48, AR 86%	κ 0.57, AR 88%
Surg2			κ 0.53, AR 89%
Horizontal sacral fracture
	Surg1	Surg2	Surg3
Surg4	κ 0.60, AR 86%	κ 0.26, AR 84%	κ 0.59, AR 87%
Surg1		κ 0.18, AR 77%	κ 0.58, AR 85%
Surg2			κ 0.31, AR 85%
Comminution/dislocation of ventral fracture
	Surg1	Surg2	Surg3
Surg4	κ 0.36, AR 69%	κ 0.54, AR 85%	κ 0.48, AR 75%
Surg1		κ 0.23, AR 63%	κ 0.54, AR 77%
Surg2			κ 0.32, AR 69%