Table 4 Intra-observer analysis for C, relative L, relative R and orientation of vortex ring cores

Intraclass correlation (absolute agreement)

0.980 (p < 0.000)

0.985 (p < 0.000)

0.988 (p < 0.000)

0.971 (p < 0.000)

Mean difference

1.7

0.000

0.001

0.46444

Confidence interval difference

−0.1;3.6

−0.003;0.003

−0.004;0.007

−0.279;1.208

p value difference

0.07

0.90

0.58

0.21

Mean relative unsigned difference

3%

2%

3%

1%

Coefficient of variance

7%

7%

7%

3%