Table 3 Summary of Bland-Altman and concordance correlation statistics comparing inter-observer variability of volume and mass measurements for three image acquisition techniques

Bland-Altman

 Bias

3.7

−2.2

2.3

0.5

−1.5

−0.3

−4.3

−0.7

−3.1

 SD of Bias

7.9

6.2

6.8

5.0

4.6

5.1

9.1

11.4

8.4

 Min. Limit (95 %)

−11.8

−14.4

−11.0

−9.4

−10.6

−10.3

−22.2

−23.1

−19.5

 Max Limit (95 %)

19.2

10.0

15.5

10.4

7.6

9.7

13.4

21.7

13.2

Concordance correlation coefficient (ρ_c)

0.9795

0.9852

0.9866

0.9658

0.9678

0.9721

0.9588

0.9486

0.9670

 95 % C. I.

0.9645 to 0.9882

0.9712 to 0.9924

0.9768 to 0.9923

0.9409 to 0.9804

0.9384 to 0.9833

0.9520 to 0.9839

0.9299 to 0.9760

0.9050 to 0.9725

0.9428 to 0.9810

 Pearson correlation coefficient (ρ)

0.9834

0.9868

0.9882

0.9666

0.9712

0.9734

0.9677

0.9536

0.9711

 Bias correction factor (c _b)

0.9961

0.9983

0.9984

0.9992

0.9965

0.9987

0.9909

0.9947

0.9958