metafor (version 1.9-4)

coef.rma: Extract the Model Coefficients and Coefficient Table from 'rma' and 'summary.rma' Objects

Description

The coef function extracts the estimated model coefficients from objects of class "rma". For objects of class "summary.rma", the model coefficients, corresponding standard errors, test statistics, p-values, and confidence interval bounds are extracted.

Usage

## S3 method for class 'rma':
coef(object, \dots)

## S3 method for class 'summary.rma':
coef(object, \dots)

Arguments

object

an object of class "rma" or "summary.rma".

...

other arguments.

Value

• Either a vector with the estimated model coefficient(s) or a data frame with the following elements:
• estimate
  estimated model coefficient(s).
• se
  corresponding standard error(s).
• zval
  corresponding test statistic(s).
• pval
  corresponding p-value(s).
• ci.lb
  corresponding lower bound of the confidence interval(s).
• ci.ub
  corresponding upper bound of the confidence interval(s).
• When the model was fitted with the Knapp and Hartung (2003) method (i.e., knha=TRUE in the rma.uni function), then zval is called tval in the data frame that is returned by the function.

References

Viechtbauer, W. (2010). Conducting meta-analyses in R with the metafor package. Journal of Statistical Software, 36(3), 1--48. http://www.jstatsoft.org/v36/i03/.

See Also

rma.uni, rma.mh, rma.peto, rma.glmm, rma.mv

Examples

### load BCG vaccine data
data(dat.bcg)

### meta-analysis of the log relative risks using a mixed-effects model
### with two moderators (absolute latitude and publication year)
res <- rma(measure="RR", ai=tpos, bi=tneg, ci=cpos, di=cneg,
           mods = ~ ablat + year, data=dat.bcg)
coef(res)
coef(summary(res))