Forest Plots

Function to create forest plots for objects of class "mm_perf".

Usage

# S3 method for mm_perf
plot(x, ...)

Arguments

x

An object of class "mm_perf"

...

Additional arguments which are passed to forest.

Value

An object of class ggplot

Details

The forest plot shows the performance estimates of each study with corresponding confidence intervals.

References

Lewis S, Clarke M. Forest plots: trying to see the wood and the trees. BMJ. 2001; 322(7300):1479--80.

Author

Thomas Debray <thomas.debray@gmail.com>

Examples

data(EuroSCORE)

# Calculate the c-statistic and its standard error
est1 <- ccalc(cstat = c.index, cstat.se = se.c.index, cstat.cilb = c.index.95CIl, 
              cstat.ciub = c.index.95CIu, N = n, O = n.events, data = EuroSCORE, slab = Study)
plot(est1)


# Calculate the total O:E ratio and its standard error
est2 <- oecalc(O = n.events, E = e.events, N = n, data = EuroSCORE, slab = Study)
plot(est2)