Intra observer reliability Inter observerreliability
  Mean SDbetween SDwithin ICC (95% CI) Mean SDbetween SDwithin ICC (95% CI)
Systolic                
Septal site 6.8 0.84 0.31 0.88 (0.61 – 0.97) 6.9 0.79 0.49 0.72 (0.25 – 0.92)
Lateral site 6.3 1.18 0.25 0.96 (0.84 – 0.99) 6.4 1.08 0.38 0.89 (0.65 – 0.97)
Early diastolic                
Septal site 9.1 1.45 0.34 0.95 (0.82 – 0.99) 9.1 1.19 0.43 0.88 (0.62 – 0.97)
Lateral site 9.7 1.60 0.33 0.96 (0.85 – 0.99) 9.8 1.55 0.38 0.94 (0.80 – 0.98)
Late diastolic                
Septal site 5.3 1.43 0.29 0.96 (0.86 – 0.99) 5.5 1.59 0.48 0.91 (0.71 – 0.98)
Lateral site 4.6 1.31 0.17 0.98 (0.94 – 1.00) 4.6 1.33 0.16 0.98 (0.95 – 1.00)
Table 4: Test-retest of intra- and interobserver reliability for TVI method measured on 10 subjects at the aortic annulus.
TVI: Colour Coded Tissue Doppler Imaging; Sdbetween: Standard Deviation Between Subjects; Sdwithin: Standard Deviation Within Subjects; ICC: Intra Class Correlation; CI: Confidence Interval.