Parameter | Test result^{b} | 95% CI^{a} |
---|---|---|

Any PZA resistance | ||

Sensitivity | 100 (11/11) | 71.5-100 |

Specificity | 98.7 (1,496/1,515) | 98.0-99.2 |

Positive predictive value | 36.7 (11/30) | 19.9-56.2 |

Negative predictive value | 100 (1,496/1,496) | 99.8-100 |

PZA monoresistance | ||

Sensitivity | 81.8 (9/11) | 48.2-97.7 |

Specificity | 99.4 (1,506/1,515) | 98.9-99.7 |

Positive predictive value | 50.0 (9/18) | 26.0-74.0 |

Negative predictive value | 99.9 (1,506/1,508) | 99.5-100 |

↵

*a*CI, confidence interval.↵

*b*Values are percentages. Values in parentheses were used to calculate the percentages and were obtained as follows: sensitivity,*a/(a*+*c*); specificity,*d/(b*+*d)*; positive predictive value,*a/(a*+*b*); and negative predictive value,*d/(c*+*d)*. In these calculations,*a*is the number of*M. bovis*isolates that were PZA (mono)resistant,*b*is the number of*M. tuberculosis*isolates that were PZA (mono)resistant,*c*is the number of*M. bovis*isolates that were PZA susceptible, and*d*is the number of*M. tuberculosis*isolates that were PZA susceptible.