Table 11 Statistical data representation for the Bland–Altman plots.

(Fig. 1a)

(Fig. 1b)

(Fig. 1c)

Average (vertical axis)

− 1.600

− 1.264

0.336

SD of difference

5.094

5.068

2.243

Correlation (r)

0.963

0.962

0.991

N

110

110

110

Lower LOA

− 11.584

− 11.196

− 4.061

Upper LOA

8.384

8.669

4.733