Table 1.

Intra- and inter-reader bias and variability in kidney volume measurements

Intra-reader Differences in Kidney Volume Measurements (mL)Inter-reader Differences in Kidney Volume Measurements (mL)
PregadoliniumPostgadoliniumPregadoliniumPostgadolinium
RightLeftTotalRightLeftTotalRightLeftTotalRightLeftTotal
Mean (bias)10.883.7414.62−4.15−5.34−9.496.642.919.5614.5515.8030.36
SD (variability)14.116.522.710.513.822.116.021.730.018.020.034.4
P value0.0030.3230.0100.0930.1010.0700.0780.5540.1710.0020.0020.001
Mean % Change (bias)1.710.521.06−0.78−0.68−0.691.240.851.042.992.852.89
SD % Change (variability)2.31.81.51.61.81.463.32.82.53.12.72.4
P value0.0030.2060.0040.0430.1150.0470.1060.1880.0830.0000.0000.000