Table 4.

Agreement Analysis in Stiffness Measurements by iLivTouch and FibroScan

Parameter	Study 1		Study 2
	Intercept	Slope	Intercept	Slope
Coefficient	4.84	0.71	1.58	1.17
Std. error	0.93	0.10	1.29	0.20
95% CI for coefficient	2.99 to 6.69	0.51 to 0.91	−0.96 to 4.14	0.76 to 1.57
Regression equation†	y = 4.84 + 0.71x		y = 1.58 + 1.17x
Correlation coefficient, r	0.75		0.57
95% CI for r	0.69 to 0.80		0.46 to 0.66
CCC	0.70		0.46
95% CI for CCC	0.64 to 0.75		0.36 to 0.54
Descriptive Statistics of Stiffness Measurements of iLivTouch and FibroScan
Variable	FIBR	LIVT	FIBR	LIVT
Sample size (n)	231		185
Lowest value (kPa)	2.5	2.9	2.5	2.9
Highest value (kPa)	75	46.3	24.2	26.4
Arithmetic mean (kPa)	11.28	12.91	7.21	10.04
95% CI for the arithmetic mean	9.84 to 12.71	11.88 to 13.93	6.65 to 7.77	9.38 to 10.69
Median (kPa)	7.2	10.3	5.9	8.6
95% CI for the median	6.11 to 8.00	9.11 to 11.98	5.50 to 6.43	7.90 to 9.56
Standard deviation	11.05	7.90	3.86	4.53
Relative standard deviation	0.98 (98.02%)	0.61 (61.21%)	0.53 (53.63%)	0.45 (45.15%)
Variance ratio	1.95		0.72

CCC, concordance correlation coefficient; FIBR, FibroScan; LIVT, iLivTouch.

†Deming rRegression, x: FIBR(kPa) and y: LIVT(kPa)