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Table 2 External and Internal validity of drug susceptibility testing for individual first line drugs

From: High levels of multidrug resistant tuberculosis in new and treatment-failure patients from the Revised National Tuberculosis Control Programme in an urban metropolis (Mumbai) in Western India

  EXTERNALa (n = 45) INTERNALb (n = 70)
Drugs Concordance
(%)
Kappa Values Sensitivity
(%)
Specificity
(%)
Concordance
(%)
Kappa Values
H 91 0.773 86 94 95 0.893
R 93 0.762 100 93 97 0.919
Z 87 0.557 100 87 91 0.819
E 89 0.487 80 91 90 0.759
  1. (Key – a: Performed at Swedish Institute for Infectious Disease Control, Stockholm,
  2. b: Repeated at FMR,
  3. H: Isoniazid, R: Rifampicin, Z: Pyrazinamide, E: Ethambutol)