R: Neuralgia data

neuralgia {emmeans} | R Documentation

## Neuralgia data

### Description

These data arise from a study of analgesic effects of treatments of elderly patients who have neuralgia. Two treatments and a placebo are compared. The response variable is whether the patient reported pain or not. Researchers recorded the age and gender of 60 patients along with the duration of complaint before the treatment began.

### Usage

    neuralgia

### Format

A data frame with 60 observations and 5 variables:

`Treatment`

  Factor with 3 levels `A`, `B`, and `P`. The latter is placebo

`Sex`

  Factor with two levels `F` and `M`

`Age`

  Numeric covariate – patient's age in years

`Duration`

  Numeric covariate – duration of the condition before beginning treatment

`Pain`

  Binary response factor with levels `No` and `Yes`

### Source

Cai, Weijie (2014) Making Comparisons Fair: How LS-Means Unify the Analysis of Linear Models, SAS Institute, Inc. Technical paper 142-2014, page 12, http://support.sas.com/resources/papers/proceedings14/SAS060-2014.pdf

### Examples

    # Model and analysis shown in the SAS report:
    neuralgia.glm <- glm(Pain ~ Treatment * Sex + Age, family = binomial(),
       data = neuralgia)
    pairs(emmeans(neuralgia.glm, ~ Treatment, at = list(Sex = "F")),
        reverse = TRUE, type = "response", adjust = "bonferroni")

[Package emmeans version 1.1.3 Index]