Pearson_LR_tests_unspecific_ordering_rx2 {contingencytables} | R Documentation |

## The Pearson chi-squared and likelihood ratio tests for unspecific ordering in rx2 tables

### Description

The Pearson chi-squared and likelihood ratio tests for unspecific ordering in rx2 tables. Described in Chapter 5 "The Ordered rx2 Table". May also be used for 2xc tables, after flipping rows and columns (i.e. if n is a 2xc table, call this function with n' (the transpose of n) as the first argument).

### Usage

```
Pearson_LR_tests_unspecific_ordering_rx2(n, direction)
```

### Arguments

`n` |
the observed counts (an rx2 matrix) |

`direction` |
the direction of the success probabilities ("increasing" or "decreasing") |

### Value

An object of the contingencytables_result class,
basically a subclass of `base::list()`

. Use the `utils::str()`

function
to see the specific elements returned.

### Examples

```
# Chapter 5: Alcohol consumption and malformations (Mills and Graubard, 1987)
Pearson_LR_tests_unspecific_ordering_rx2(mills_graubard_1987, "increasing")
# Chapter 5: Elevated troponin T levels in stroke patients (Indredavik et al., 2008)
Pearson_LR_tests_unspecific_ordering_rx2(indredavik_2008, "decreasing")
# Chapter 6: Postoperative nausea (Lydersen et al., 2012a)
Pearson_LR_tests_unspecific_ordering_rx2(t(lydersen_2012a), "decreasing")
```

[Package

*contingencytables*version 3.0.0 Index]