radial.meta | R Documentation |

Draw a radial plot (also called Galbraith plot) which can be used to assess bias in meta-analysis.

```
## S3 method for class 'meta'
radial(
x,
xlim = NULL,
ylim = NULL,
xlab = "Inverse of standard error",
ylab = "Standardised treatment effect (z-score)",
common = TRUE,
axes = TRUE,
pch = 1,
text = NULL,
cex = 1,
col = NULL,
level = NULL,
warn.deprecated = gs("warn.deprecated"),
fixed,
...
)
## Default S3 method:
radial(
x,
y,
xlim = NULL,
ylim = NULL,
xlab = "Inverse of standard error",
ylab = "Standardised treatment effect (z-score)",
common = TRUE,
axes = TRUE,
pch = 1,
text = NULL,
cex = 1,
col = NULL,
level = NULL,
...
)
```

`x` |
An object of class |

`xlim` |
The x limits (min, max) of the plot. |

`ylim` |
The y limits (min, max) of the plot. |

`xlab` |
A label for the x-axis. |

`ylab` |
A label for the y-axis. |

`common` |
A logical indicating whether the pooled common effect estimate should be plotted. |

`axes` |
A logical indicating whether axes should be drawn on the plot. |

`pch` |
The plotting symbol used for individual studies. |

`text` |
A character vector specifying the text to be used instead of plotting symbol. |

`cex` |
The magnification to be used for plotting symbol. |

`col` |
A vector with colour of plotting symbols. |

`level` |
The confidence level utilised in the plot. |

`warn.deprecated` |
A logical indicating whether warnings should be printed if deprecated arguments are used. |

`fixed` |
Deprecated argument (replaced by 'common'). |

`...` |
Graphical arguments as in |

`y` |
Standard error of estimated treatment effect. |

A radial plot (Galbraith 1988a,b), also called Galbraith plot, is
drawn in the active graphics window. If `common`

is TRUE, the
pooled estimate of the common effect model is plotted. If
`level`

is not NULL, the corresponding confidence limits are
drawn.

Guido Schwarzer guido.schwarzer@uniklinik-freiburg.de

Galbraith RF (1988a):
Graphical display of estimates having differing standard errors.
*Technometrics*,
**30**, 271–81

Galbraith RF (1988b):
A note on graphical presentation of estimated odds ratios from
several clinical trials.
*Statistics in Medicine*,
**7**, 889–94

`metabias`

, `metabin`

,
`metagen`

, `funnel`

```
data(Olkin1995)
m1 <- metabin(ev.exp, n.exp, ev.cont, n.cont,
data = Olkin1995, subset = c(41, 47, 51, 59),
studlab = paste(author, year), sm = "RR", method = "I")
# Radial plot
#
radial(m1, level = 0.95)
```

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