miners


The file gives the numbers of coalminers classified by
radiological examination into one of three categories of
pneumoconiosis, normal,  mild pneumoconiosis and severe pneumoconiosis,
and by years spent working at the coalface (interval midpoint).


datasets

This package accompanies Aitkin et al, Statistical
Modelling in R, OUP, 2009. The package contains some functions
and datasets used in the text.

Ross Darnell

SMIR

Companion to Statistical Modelling in R

miners function

A data.frame of 8 obs. of 4 variables:
  <table><tr><td>
     [,1]</td>
<td> years</td>
</tr><tr><td> numeric, years (midpoint) of years spent at coalface</td>
<td>
 [,2]</td>
</tr><tr><td> n    </td>
<td> integer, number of miners classified as normal</td>
</tr><tr><td>
 [,3]</td>
<td> m    </td>
</tr><tr><td> integer, number of miners  with mild pneumoconiosis</td>
<td>
 [,4]</td>
</tr><tr><td> s    </td>
<td> integer, number of miners  with severe pneumoconiosis</td>
</tr></table>

Format

Ashford, J. R. (1959), "An approach to the analysis of data
  from semi-quantal responses in biological response",
  <em>Biometrics</em>,
  <b>15</b>,573--581.

miners: Pneumoconiosis in coal miners

Description

Usage

Arguments

Format

Source

[,1]	years
numeric, years (midpoint) of years spent at coalface	[,2]
n	integer, number of miners classified as normal
[,3]	m
integer, number of miners with mild pneumoconiosis	[,4]
s	integer, number of miners with severe pneumoconiosis