Table 1.

Comparison between R2*_Wood and R2*_Pennell values and between LIC_Wood and LIC_Pennell values for the two cohorts of patients. LIC values are expressed also in µmol/g/dw, calculated from values expressed in mg/g/dw.

	Values	Regression Analysis			Bland Altman
	Mean ± standard deviation [range]	Slope	Intercept	R- squared	Mean difference	Limits
Single-centre cohort
R2*Wood vs R2*Pennell	422.3±445.6 Hz [29.7–1344.9 Hz] vs 367.5±380.6 Hz [28.1–1219.5 Hz]	1.16±0.02	−3.99±12.72 Hz	0.982	54.7 Hz	−113.3 to 222.8 Hz
LICWood vs LICPennell	10.9±11.3 mg/g/dw [0.9–34.4 mg/g/dw] vs 11.7±11.4 mg/g/dw [1.5–37.3 mg/g/dw]	0.98±0.02	−0.59±0.33 mg/g/dw	0.991	−0.8 mg/g/dw	−3.8 to 2.2 mg/g/dw
LICWood vs LICPennell	195.6±202.6 µmol/g/dw [17.1–615.1 µmol/g/dw] vs 209.9±204 µmol/g/dw [27.6–667.4 µmol/g/dw]	0.98±0.02	−10.54±5.97 µmol /g/dw	0.991	−14.3 µmol /g/dw	−68.6 to 40.0 µmol /g/dw
Multi-centre cohort
R2*Wood vs R2*Pennell	499.8±314.2 Hz [64.2–1237.6 Hz] vs 440.4 ± 256.1Hz [62.2–1087.0 Hz]	1.21± 0.02	– 32.07±16.31 Hz	0.969	59.5 Hz	−90.8 to 209.7 Hz
LICWood vs LICPennell	12.9±7.9 mg/g/dw [1.8–31.6 mg/g/dw] vs 13.9±7.7 mg/g/dw [2.5–33.3 mg/g/dw]	1.02±0.03	−1.33±0.43 mg/g/dw	0.969	−1.0 mg/g/dw	−3.8 to 1.8 mg/g/dw
LICWood vs LICPennell	230.9±142.9 µmol/g/dw [32.8–566.3 µmol/g/dw] vs 249.0±137.5 µmol/g/dw [45.9–596.2 µmol/g/dw]	1.02±0.03	−23.82±7.71 µmol /g/dw	0.969	−18.2 µmol /g/dw	−67.7 to 31.4 µmol /g/dw