| metacum {meta} | R Documentation |
Performs a cumulative meta-analysis.
metacum(x, pooled="fixed", sortvar)
x |
An object of class meta. |
pooled |
A character string indicating whether a fixed or random
effects model is used for pooling. Either "fixed" or
"random", can be abbreviated. |
sortvar |
An optional vector used to sort the individual studies
(must be of same length as x$TE). |
A cumulative meta-analysis is performed. Studies are included
sequentially as defined by sortvar.
An object of class c("metacum", "meta") with corresponding
print, plot function. The object is a
list containing the following components:
TE, seTE |
Estimated treatment effect and standard error of pooled estimate in cumulative meta-analyses. |
studlab |
Study label describing addition of studies. |
p.value |
P-value for test of overall effect. |
I2 |
Heterogeneity statistic I2. |
sm |
Summary measure. |
method |
Method used for pooling. |
k |
Number of studies combined in meta-analysis. |
pooled |
As defined above. |
Guido Schwarzer sc@imbi.uni-freiburg.de
Cooper H & Hedges LV (1994), The Handbook of Research Synthesis. Newbury Park, CA: Russell Sage Foundation.
data(Fleiss93)
meta1 <- metabin(event.e, n.e, event.c, n.c,
data=Fleiss93, studlab=study,
sm="RR", meth="I")
meta1
metacum(meta1)
metacum(meta1, pooled="random")
plot(metacum(meta1, pooled="random"))