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Table 3 Correlation and absolute mean difference of three unimodal segmentation groups to the reference volume (ml)

From: Semiautomatic segmentation of the kidney in magnetic resonance images using unimodal thresholding

  Correlation to the reference volume Mean difference to the reference volume (ml) ± SD
  95% CI t p (2-tailed) Total Left Right Male Female
Observer 1 1 0.97 [0.94, 0.98] 26.5 <2.2e−16 4.5 ± 7.4 6.5 ± 7.9 2.6 ± 6.4 4.4 ± 9.5 4.7 ± 5.1
2 0.98 [0.97, 0.99] 36.0 <2.2e−16 1.7 ± 5.4 3.5 ± 5.7 −0.2 ± 4.4 0.7 ± 6.1 2.5 ± 4.6
Observer 2 0.97 [0.95, 0.99] 28.0 <2.2e−16 −1.6 ± 6.7 −2.3 ± 6.9 −0.9 ± 6.4 −3.4 ± 7.2 −0.2 ± 5.9