BMC Musculoskeletal Disorders

Table 4 Inter-rater intra-class correlation

From: Fluid signal changes around the knee on MRI are associated with increased volumes of subcutaneous fat: a case-control study

Tissue	Review	Difference (cm²)	95% LA	ICC	95% CI
Bone	A1/B1 Study	0.04	−1.48–1.57	0.96	0.89–0.98
	A1/B1 Control	0.28	−3.50–2.93	0.85	0.64–0.94
	A2/B2 Study	0.17	−1.66–1.25	0.96	0.91–0.99
	A2/B2 Control	0.27	−2.26–2.80	0.91	0.78–0.97
Fat	A1/B1 Study	0.24	−2.75–3.23	0.99	0.97–0.99
	A1/B1 Control	1.00	−4.11–2.12	0.99	0.96–0.99
	A2/B2 Study	0.42	−3.45–4.31	0.99	0.98–1.00
	A2/B2 Control	1.46	−5.06–2.15	0.98	0.95–0.99

Key: A observer A, B observer B, SD standard deviation, DM difference in means, CI confidence interval, IQR inter-quartile range, LA limits of agreement, ICC intra-class correlation coefficient

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