From: High yield of culture-based diagnosis in a TB-endemic setting

Relative incremental yield vs. | ||||
---|---|---|---|---|

Yield | 1st S | 2 S total | 1st C | |

Expected # of P after 1 S = 377/2537 = 14.9% | ||||

Expected # of P after 2 S = 508/2537 = 20.0% | 1.3 | |||

Expected # of P after 1 C = 682/2537 = 26.9% | 1.8 | 1.3 | ||

Expected # of P after 2 C = 760/2537 = 29.9% | 2.0 | 1.5 | 1.1 | |

Absolute incremental yield vs. | ||||

Yield | 1st S | 2 S total | 1st C | |

Expected # of P after 1 S = 377/2537 = 14.9% | ||||

Expected # of P after 2 S = 508/2537 = 20.0% | 5.2% | |||

Expected # of P after 1 C = 682/2537 = 26.9% | 12.0% | 6.9% | ||

Expected # of P after 2 C = 760/2537 = 29.9% | 15.1% | 9.9% | 3.1% | |

NND vs. | ||||

NND | 1st S | 2 S total | 1st C | |

1st Smear | 7 | |||

2 Smears total | 5 | 19 | ||

1st Culture | 4 | 8 | 15 | |

2 Cultures total | 3 | 7 | 10 | 33 |