Fig. 6.

Comparison of fibrocyte counts determined in fresh blood samples and in stabilized samples stored for 48 (A and B) or 96 (C and D) hours before processing. Panels A and C show the results of the linear regression analysis and the dotted line is the line of identity. Panels B and D show the Bland–Altman analysis by groups: healthy subjects (triangles), patients with controlled asthma (squares) and patients with treatment-resistant asthma (circles). The Bland–Altman plot displays the differences between the fibrocyte counts in fresh samples and those in stored samples as a percentage of the average counts versus the average values, with individual % differences, the mean value and the limits of agreement. CCC, concordance correlation coefficient; CI, confidence interval; SD, standard deviation.