R (SEE) | Upper limit of agreement (95% CI) | Lower limit of agreement (95% CI) | |
Intraobserver variability | |||
PDV | 0.99 (0.9) | 2.9 (1.3 to 4.8) cm/s | −3.5 (−2.2 to −4.9) cm/s |
D-VTI | 0.98 (1.5) | 1.8 (0.9 to 2.8) cm | −1.9 (−0.8 to −3.1) cm |
Intraobserver reproducibility | |||
PDV | 0.98 (2.1) | 3.5 (1.7 to 5.9) cm/s | −4.5 (−2.1 to −6.5) cm/s |
D-VTI | 0.97 (1.8) | 2.1 (1.2 to 5.4) cm | −2.3 (−1.1 to −4.8) cm |
Interobserver variability | |||
PDV | 0.98 (1.8) | 3.1 (1.5 to 5.1) cm/s | −4.2 (−6.0 to −2.2) cm/s |
D-VTI | 0.97 (1.8) | 2.2 (0.8 to 3.3) cm | −2.2 (−0.7 to −3.5) cm |
Interobserver reproducibility | |||
PDV | 0.98 (2.1) | 6.1 (2.2 to 8.9) cm/s | −5.9 (−3.0 to −8.9) cm/s |
D-VTI | 0.97 (1.7) | 2.2 ( 1.2 to 5.7) cm | −2.4 (−1.1 to −5.0) cm |
CI, confidence intervals; D-VTI, diastolic velocity time integral; PDV, peak diastolic velocity; R, coefficient of correlation; SEE, standard error of estimates.