True positive = ΔFEV_{1} of ⩾10% and a fall in FEF_{50} of ⩾26%. | |

True negative = ΔFEV_{1} of ⩾10% and did not have a fall in FEF_{50} of ⩾26%. | |

False positive = ΔFEV_{1} of ⩽10% and a fall in FEF_{50} of ⩾26%. | |

False negative = ΔFEV_{1} of ⩾10% and a fall in FEF_{50} of ⩽26%. | |

True positive | 39 |

True negative | 55 |

Total true | 94 |

False negative | 21 |

False positive | 1 |

Total false | 22 |

Total with EIA | 60 |

Total without EIA | 56 |

Total | 116 |