A priori symptom score | 0.77 | 0.79 | 0.75 | 0.56 |

Cough/fever heuristic | 0.71 | 0.75 | 0.67 | 0.55 |

Cough/fever symptom score | 0.71 | 0.76 | 0.67 | 0.57 |

Cough/fever/acute onset heuristic | 0.64 | 0.62 | 0.61 | 0.57 |

Cough/fever/acute onset symptom score | 0.73 | 0.77 | 0.67 | 0.55 |

Cough/fever/myalgia heuristic | 0.72 | 0.72 | 0.75 | 0.58 |

Cough/fever/myalgia symptom score | 0.75 | 0.76 | 0.74 | 0.55 |

Re-fit FluScore model (Ebell 2012) | 0.77 | 0.79 | 0.74 | 0.57 |

LASSO score | 0.86 | 0.78 | 0.71 | 0.60 |

LASSO heuristic | 0.50 | 0.74 | | 0.57 |

CART (manual) | 0.81 | 0.82 | 0.67 | 0.55 |

FFT | 0.77 | 0.73 | 0.70 | 0.53 |

C5.0 tree (manual) | 0.73 | 0.79 | 0.65 | 0.55 |

Conditional inference tree (manual) | 0.79 | 0.80 | 0.63 | 0.57 |

Bayesian Additive Regression Trees (BART) | 0.86 | 0.81 | 0.70 | 0.64 |

C5.0 tree (tuned) | 0.85 | 0.75 | 0.60 | 0.57 |

CART (tuned) | 0.81 | 0.82 | 0.67 | 0.55 |

Conditional inference tree (tuned) | 0.79 | 0.79 | 0.63 | 0.55 |

Elastic net logistic regression | 0.87 | 0.83 | 0.70 | 0.65 |

Unpenalized logistic regression | 0.88 | 0.84 | 0.67 | 0.62 |

k-Nearest Neighbors classifier | 0.89 | 0.92 | 0.66 | 0.65 |

LASSO logistic regression | 0.87 | 0.83 | 0.70 | 0.65 |

Naive Bayes classifier | 0.83 | 0.79 | 0.74 | 0.68 |

Random forest | 0.89 | 0.87 | 0.73 | 0.59 |

SVM (linear kernel) | 0.85 | 0.82 | 0.75 | 0.65 |

SVM (polynomial kernel) | 0.83 | 0.79 | 0.74 | 0.67 |

SVM (RBF kernel) | 0.83 | 0.82 | 0.74 | 0.69 |

Gradient-boosted tree | 0.85 | 0.87 | 0.71 | 0.61 |