BMC Musculoskeletal Disorders

Table 2 Inter-rater reliability (ICC; CI) according to lumbar level, quartile, and side

From: Reliability of quantifying the spatial distribution of fatty infiltration in lumbar paravertebral muscles using a new segmentation method for T1-weighted MRI

	L1	L2	L3	L4	L5	L1-5
Q1	0.79	0.78	0.85	0.86	0.87	0.90
Q1	0.64–0.89	0.63–0.88	0.71–0.92	0.74–0.92	0.72–0.93	0.87–0.92
Q2	0.68	0.75	0.89	0.75	0.89	0.85
Q2	0.47–0.82	0.57–0.86	0.79–0.94	0.57–0.86	0.79–0.94	0.81–0.88
Q3	0.63	0.43	0.61	0.70	0.87	0.75
Q3	0.40–0.78	0.11–0.66	0.07–0.83	0.51–0.83	0.76–0.92	0.66–0.82
Q4	0.59	0.57	0.63	0.72	0.80	0.69
Q4	0.34–0.76	0.32–0.74	0.11–0.83	0.50–0.85	0.65–0.89	0.57–0.76
Q_mean	0.33	0.55	0.80	0.78	0.89	0.78
Q_mean	0.03–0.58	0.30–0.74	0.41–0.92	0.63–0.88	0.79–0.94	0.72–0.83
Right	0.63	0.70	0.74	0.82	0.94	0.85
Right	0.47–0.75	0.58–0.79	0.52–0.85	0.75–0.88	0.91–0.96	0.82–0.87
Left	0.76	0.64	0.79	0.74	0.82	0.80
Left	0.66–0.83	0.50–0.74	0.45–0.90	0.63–0.85	0.74–0.88	0.76–0.83

Lumbar level (L1,L2,L3,L4,L5) and all lumbar levels combined (L1-5); Quartiles (Q1,Q2,Q3,Q4) where 1 is most medial, and 4 most lateral, and average of all 4 (Q_mean)

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