R: Heart Attack Data

heart {glm2} | R Documentation

## Heart Attack Data

### Description

This data set is a cross-tabulation of data on 16949 individuals who experienced a heart attack (ASSENT-2 Investigators, 1999). There are 4 categorical factors each at 3 levels, together with the number of patients and the number of deaths for each observed combination of the factors. This data set is useful for illustrating the convergence properties of `glm` and `glm2`.

### Usage

    data(heart)

### Format

A data frame with 74 observations on the following 6 variables.

`Deaths`

  number of deaths

`Patients`

  number of patients

`AgeGroup`

  categorization of the age of the patients

`Severity`

  severity of the heart attack

`Delay`

  categorization of the time from heart attack to treatment

`Region`

  geographical region in which the patients were treated

### Details

The variable `AgeGroup` groups the age of the patients as follows: 1 = <65 years, 2 = 65-75 years, 3 = >75 years. The variable `Delay` groups the time from heart attack onset to treatment as follows: 1 = <2 hours, 2 = 2-4 hours, 3 = >4 hours. The variable `Severity` denotes the severity of the heart attack using the Killip class: 1 = least severe (class I), 2 = middle severity (class II), 3 = most severe (class III or IV). The variable `Region` provides the geographical region in which the patients were treated: 1 = Western countries, 2 = Latin America, 3 = Eastern Europe. This data set is useful for illustrating the convergence properties of `glm` and `glm2`; see examples in the help documentation for `glm2`.

### References

ASSENT-2 Investigators. (1999) Single-bolus tenecteplase compared with front-loaded alteplase in acute myocardial infraction: The ASSENT-2 double-blind randomized trial. Lancet 354, 716-722.

[Package glm2 version 1.1.3 Index]