A reliable and robust method for the upper thigh muscle quantification on computed tomography: toward a quantitative biomarker for sarcopenia

Table 3 Inter-reader agreement between readers 1 and 2

Agreement		Bland-Altman Analysis		Intraclass correlation coefficient
Agreement		Mean of differences (cm²)	95% LOA (cm²)	Intraclass correlation coefficient
SMA	Upper Thigh	0.526	−0.462 to 1.513	0.999 (0.9933 to 0.9997)
	Mid-Thigh	1.250	−12.105 to 14.605	0.956 (0.9373 to 0.9697)
	L3	−1.156	−9.949 to 7.636	0.990 (0.9853 to 0.9933)
SFA	Upper Thigh	−2.581	−14.206 to 9.044	0.985 (0.9745 to 0.9909)
	Mid-Thigh	−5.223	− 44.335 to 33.889	0.952 (0.9223 to 0.9687)
	L3	5.767	−15.919 to 27.453	0.981 (0.9538 to 0.9901)

Abbreviations: SMA skeletal muscle area, SFA subcutaneous fat area, LOA limit of agreement

ISSN: 1471-2474