Table 3 Intra-observer variability in the ultrasonographic measurements of the umbilical cord (n = 221)
Characteristics | Mean Difference (SD) | (95%CI) | p* | R | ICC | Crombach's alpha |
|---|---|---|---|---|---|---|
Diameter of the cord (mm) | -0.120 (0.960) | (-0.248; 0.007) | 0.734 | 0.95 | 0.96 | 0.98 |
Diameter of the artery (mm) | -0.137 (0.576) | (-0.213; -0.06) | 0.332 | 0.86 | 0.88 | 0.94 |
Diameter of the vein (mm) | 0.011 (0.763) | (-0.09; 0.113) | 0.917 | 0.92 | 0.94 | 0.97 |
Area of the cord (mm2) | -2.500 (24.390) | (-5.74; 0.73) | 0.732 | 0.95 | 0.95 | 0.97 |