Inter- and intra-rater reliability of vertebral fracture classifications in the Swedish fracture register

doi:10.5312/wjo.v10.i1.14

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World Journal of Orthopedics

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2218-5836

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World J Orthop. Jan 18, 2019; 10(1): 14-22
Published online Jan 18, 2019. doi: 10.5312/wjo.v10.i1.14

Table 3 Inter-rater reliability compared to the gold standard shown as kappa value (asymptotic standard error) for vertebral fracture classifications

		Kappa
		Cervical spine					Thoracolumbar spine
		C1-Th1	C1	C2	C3-Th1	Signs of ankylosing spinal disorder¹	Th2-L5	Th2-L5 A-type injuries	Th2-L5 B-type injuries	Th2-L5 C-type injuries	Signs of ankylosing spinal disorder¹
Test 1, Rater	1	0.59 (0.07)	0.61 (0.10)	0.81 (0.07)	0.78 (0.06)	0.81 (0.13)	0.64 (0.08)	0.88 (0.06)	0.70 (0.08)	0.72 (0.10)	0.91 (0.07)
	2	0.59 (0.07)	0.72 (0.10)	0.89 (0.06)	0.71 (0.07)	0.91 (0.09)	0.67 (0.07)	0.86 (0.06)	0.64 (0.08)	0.89 (0.08)	1.00 (0.00)
	3	0.51 (0.07)	0.79 (0.10)	0.66 (0.08)	0.66 (0.07)	0.67 (0.15)
	4	0.47 (0.07)	0.86 (0.09)	0.74 (0.07)	0.61 (0.07)	0.32 (0.11)
	5	0.59 (0.07)	0.93 (0.07)	0.74 (0.07)	0.73 (0.07)	0.77 (0.13)	0.44 (0.08)	0.67 (0.08)	0.63 (0.09)	0.57 (0.11)	0.91 (0.07)
	6						0.46 (0.08)	0.76 (0.08)	0.49 (0.09)	0.81 (0.09)	0.75 (0.10)
	7						0.45 (0.08)	0.67 (0.08)	0.48 (0.09)	0.61 (0.13)	0.31 (0.13)
Test 1 Mean		0.55 (0.06)	0.78 (0.12)	0.77 (0.08)	0.70 (0.07)	0.70 (0.23)	0.53 (0.11)	0.77 (0.10)	0.59 (0.10)	0.72 (0.13)	0.77 (0.27)
Test 2, Rater	1	0.70 (0.07)	0.93 (0.07)	0.81 (0.07)	0.80 (0.06)	0.81 (0.13)	0.58 (0.08)	0.82 (0.07)	0.76 (0.07)	0.77 (0.09)	0.91 (0.07)
	2	0.65 (0.07)	0.65 (0.10)	0.89 (0.06)	0.78 (0.06)	0.77 (0.13)	0.60 (0.08)	0.82 (0.07)	0.62 (0.08)	0.78 (0.10)	0.86 (0.08)
	3	0.26 (0.06)	0.66 (0.09)	0.56 (0.07)	0.45 (0.07)	0.52 (0.14)
	4	0.44 (0.07)	0.72 (0.10)	0.65 (0.08)	0.63 (0.07)	0.20 (0.08)
	5	0.63 (0.07)	1.00 (0.00)	0.85 (0.07)	0.70 (0.07)	0.74 (0.15)	0.69 (0.07)	0.82 (0.07)	0.76 (0.07)	0.82 (0.10)	0.95 (0.05)
	6						0.35 (0.08)	0.58 (0.09)	0.46 (0.09)	0.51 (0.13)	0.70 (0.11)
	7						0.18 (0.07)	0.34 (0.09)	0.41 (0.10)	0.52 (0.14)	0.38 (0.13)
Test 2 Mean		0.54 (0.18)	0.79 (0.16)	0.75 (0.14)	0.67 (0.14)	0.61 (0.25)	0.48 (0.21)	0.62 (0.21)	0.60 (0.17)	0.68 (0.15)	0.76 (0.23)

For test 1 and 2 mean kappa (standard deviation) is shown. ¹Ankylosing spondylitis or diffuse idiopathic skeletal hyperostosis. C: Cervical vertebra; L: Lumbar vertebra; Th: Thoracic vertebra.

Citation: Morgonsköld D, Warkander V, Savvides P, Wihlborg A, Bouzereau M, Möller H, Gerdhem P. Inter- and intra-rater reliability of vertebral fracture classifications in the Swedish fracture register. World J Orthop 2019; 10(1): 14-22
URL: https://www.wjgnet.com/2218-5836/full/v10/i1/14.htm
DOI: https://dx.doi.org/10.5312/wjo.v10.i1.14