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 | |