Table 4.

MTT Inter- and intra-observer reproducibility for left atrium measurement (n = 22)

	Inter-reader				Intra-reader
LA parameter	Difference (mean ± SD)	P	ICC	P	Difference (mean ± SD)	P	ICC	p
Vmax (ml)	−2.25 ± 5.29	0.07	0.97	<0.001	0.74 ± 4.48	0.44	0.98	<0.001
LAEF (%)	1.40 ± 3.80	0.91	0.92	<0.001	−0.11 ± 4.17	0.90	0.91	<0.001
LAPEF (%)	0.43 ± 4.16	0.62	0.82	<0.001	0.68 ± 3.28	0.33	0.88	<0.001
LAAEF (%)	1.54 ± 5.05	0.16	0.87	<0.001	−0.64 ± 5.08	0.55	0.87	<0.001
Smax (%)	−0.16 ± 2.37	0.75	0.96	<0.001	−0.34 ± 2.96	0.59	0.92	<0.001
SRmax (%/ms)	0.05 ± 0.16	0.13	0.91	<0.001	−0.04 ± 0.15	0.19	0.89	<0.001
SRe (%/ms)	0.009 ± 0.16	0.79	0.93	<0.001	−0.02 ± 0.11	0.50	0.96	<0.001
SRa (%/ms)	−0.12 ± 0.57	0.34	0.59	<0.05	−0.08 ± 0.27	0.16	0.92	<0.001

Results are reported as mean ± standard deviation

Abbreviations: Vmax left atrial maximal volume, LAEF left atrial total ejection fraction, LAPEF left atrial passive ejection fraction, LAAEF left atrial active ejection fraction, Smax maximum systolic strain, SRmax maximum systolic strain rate, SRe early-diastolic strain rate, SRa atrial diastolic strain rate, ICC intra-class correlation coefficient