Description Usage Arguments Examples

Given counts in a two-by-two table, computes risk ratio and confidence interval limits.

1 | ```
twoXtwoRR(n11, n10, n01, n00, alpha = 0.05)
``` |

`n11` |
Number exposed (X=1) and diseased (D=1) |

`n10` |
Number exposed (X=1) and not diseased (D=0) |

`n01` |
Number unexposed (X=0) and diseased (D=1) |

`n00` |
Number unexposed (X=0) and not diseased (D=0) |

`alpha` |
Alpha level associated with confidence interval |

1 2 3 4 5 6 7 | ```
# Hammond and Holl (1958 JAMA) Data
# Two by Two Table
# Lung Cancer No Lung Cancer
# Smoker 397 78557
# Nonsmoker 51 108778
twoXtwoRR(397, 78557, 51, 108778)
``` |

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