Table 3.

Reproducibility: inter- and intra-rater reliability

Variable	ICC (95 % CI)	R2	R2 p-value	Coefficient of repeatability (%)
Inter-rater
Thickening fraction	0.95 (0.78–0.99)	0.80	<0.001	8.0
Caudal displacement	0.97 (0.79–0.98)	0.90	<0.001	14.5
Longitudinal strain	0.90 (0.61–0.98)	0.70	0.004	24.3
Intra-rater
Thickening fraction	0.98 (0.83–0.99)	0.94	<0.001	14.9
Caudal displacement	0.88 (0.47–0.97)	0.72	<0.002	33.6
Longitudinal strain	0.96 (0.88–0.99)	0.91	<0.001	19.4

Abbreviations: ICC, Interclass correlation coefficient; 95 % CI, 95 % confidence interval, R², Pearson’s correlation coefficient