Figure 3.

A, Variability of response and differential response to fluticasone and montelukast, as measured by change in FEV₁. Four regions show categories of response, defining a favorable response as 7.5% or greater. FP, Fluticasone propionate; Mt, montelukast. The line of identity is designated, with patients favoring montelukast falling above the line, and those favoring fluticasone falling below the line. The concordance correlation with 95% CIs is displayed. B, Difference in FEV₁ response between fluticasone propionate and montelukast for individual participants. Each line designates a single participant. [Reprinted with permission from Szefler SJ et al. J Allergy and Clin Immunol 2005;115:233–42].