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. Author manuscript; available in PMC: 2018 Aug 1.
Published in final edited form as: Int J Tuberc Lung Dis. 2017 Aug 1;21(8):894–901. doi: 10.5588/ijtld.16.0850

Table 4.

Performance characteristics of the Wayne assay for pyrazinamide susceptibility testing in 223 clinical isolates, using BACTEC™ MGIT 960 as the reference standard.

BACTEC™ MGIT 960
Wayne assay Total
No.		 Resistant
No. (%)		 Susceptible
No. (%)		 Sensitivity
(95% CI)		 Specificity
(95% CI)		 Kappa
(95% CI)
Resistant 82 68 (82.9) 14 (17.1) 75.6% (65.4–84.0) 89.5% (83.0–94.1) 0.66 (0.56–0.76)
Susceptible 141 22 (15.6) 119 (84.4)
Total 223 90 (40.4) 133 (59.6)

CI=confidence interval; MGIT=mycobacteria growth indicator tube.