Inter- and intra-study reproducibility of LV volume analysis performed by technologists

Table 1 Inter-observer variability

Observer		EDV (ml)	ESV* (ml)	mass (g)
1 vs 2	Mean (SD) difference	2.4 (6.1)	0.3 (0.2)	5.1 (11.3)
1 vs 2	Mean (SD)	163.4 (30.3)	4.4 (0.4)	147.8 (27.0)
1 vs 2	Coefficient of variation (%)	3.7	4.4	7.6

Summary statistics calculated are mean and SD of differences, mean and SD of values. Differences between observers are assessed using Bland-Altman plots. *log-transformed for skewed distribution.

ISSN: 1532-429X