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Table 2 The accuracy performance of RDBH assay compared to phenotypic DST in Mycobacterium tuberculosis clinical strains

From: Accuracy of a reverse dot blot hybridization assay for simultaneous detection of the resistance of four anti-tuberculosis drugs in Mycobacterium tuberculosis isolated from China

DrugPhenotypic DSTRDBH assay
RSSensitivity (%)Specificity (%)PPV (%)NPV (%)Concordance (%)Kappa value
RIFR1711492.498.598.890.595.00.90
 S2133      
INHR1862090.397.398.484.792.80.85
 S3111      
SMR1203577.491.590.081.184.70.69
 S14151      
EMBR513261.482.755.486.077.20.43
 S41196      
  1. S Susceptible, R Resistant, PPV Positive predictive value, NPV Negative predicte value, RIF Rifampicin, INH Isoniazid, SM Streptomycin, EMB Ethambutol, RDBH Reverse dot blot hybridization, DST Drug susceptibility testing