Description Usage Arguments Details References Examples

Provides magnitude-based inferences upon given proportions and sample sizes. Based upon WG Hopkins Microsoft Excel spreadsheet.

1 | ```
prop(p1, n1, p2, n2, conf.int)
``` |

`p1` |
proportion of group 1 |

`n1` |
sample size of group 1 |

`p2` |
proportion of group 2 |

`n2` |
sample size of group 2 |

`conf.int` |
(optional) confidence level of the interval. Defaults to |

Refer to vignette for further information.

Hopkins WG. (2007). A spreadsheet for deriving a confidence interval, mechanistic inference and clinical inference from a *p* value. *Sportscience* 11, 16-20. sportsci.org/2007/wghinf.htm

1 | ```
prop(p1 = 0.7, n1 = 25, p2 = 0.5, n2 = 20)
``` |

```
Test of Two Proportions:
diff = -0.2
chi-sq = 1.87
90% CI [-0.41, 0.04]
p value = 0.21
phi = 0.2
Magnitude-Based Inference
Unlikely Likely
"Trivial" "Substantial"
MBI (%) "24.5" "75.5"
Inference: Likely Small Effect Size.
```

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