Fig. 2

Bland–Altman difference plots comparing the minimum inhibitory concentration (MIC) results of the agar dilution method and E-test for the five antibiotics. The plots use the modification of Krouwer [17, 18]. The plots confirm that the measurements by both methods were equal for all the antibiotics, except for tetracycline. For tetracycline, the median difference was 0.061 mg/L