Table 4. Concordance correlation coefficients of recorded diameter of serum, plasma, and saline in the study subjects.

Variable	Serum	Plasma	Saline	Serum–saline
Plasma	0.66 (0.58~0.73)
Saline	0.32 (0.24~0.40)	0.59 (0.50~0.67)
Serum–Saline	0.64 (0.59~0.69)	0.36 (0.26~0.45)	−0.16 (−0.29~−0.02)
Plasma–Saline	0.25 (0.20~0.31)	0.45 (0.38~0.51)	−0.13 (−0.25~0.00)	0.55 (0.44~0.65)

Values are presented as odd ratio (95% confidence interval).