Skip to main content

Advertisement

Table 2 Agreements of MIC values obtained by susceptibility testing Escherichia coli strains on SEC and Mueller Hinton II agar plate media.

From: Evaluation of Petrifilm™ Select E. coli Count Plate medium to discriminate antimicrobial resistant Escherichia coli

Antimicrobial agent No. of E. coli Exact agreement Within ± 1 dilution Within ± 2 dilutions Kappa valuea
   No. % No. % No. %  
Ampicillin 16 10 63 16 100 16 100 0.92
Cephalothin 15 4 17 11 73 14 93 0.67
Chloramphenicol 15 11 73 15 100 15 100 0.92
Gentamicin 14 7 50 14 100 14 100 0.93
Streptomycin 15 5 33 13 87 15 100 0.74
Cefotaxime 17 8 47 17 100 17 100 0.90
Oxytetracycline 22 0 0 3 14 11 50 0.48
Sulphamethoxazole 15 7 47 7 47 7 47 0.47
  1. a The kappa value indicates the level of agreement between MIC values obtained by SEC and Mueller Hinton II agar plate media as follows: < 0.2, slight agreement; 0.2–0.4, fair agreement; 0.4–0.6, moderate agreement; 0.6–0.8, substantial agreement; > 0.8, almost perfect agreement.