print.anova.rma: Print Method for 'anova.rma' Objects

Description

Print method for objects of class "anova.rma".

Usage

## S3 method for class 'anova.rma':
print(x, digits, \dots)

Arguments

an object of class "anova.rma".

digits

integer specifying the number of decimal places to which the printed results should be rounded (if unspecified, the default is to take the value from the object).

...

other arguments.

Value

The function does not return an object.

code

"rma.mv"

Details

The output includes:

the number of parameters in the full and the reduced model.
the AIC, BIC, AICc, and log-likelihood of the full and the reduced model.
the value of the likelihood ratio test statistic.
the p-value for the likelihood ratio test.
the test statistic for the test of (residual) heterogeneity for the full and the reduced model.
the estimate oflatex{$\tau^2$

html{$\tau²$}text{$\tau^2$} from the full and the reduced model. Suppressed for fixed-effects models. R2{amount of (residual) heterogeneity in the reduced model that is accounted for in the full model (in percent). NA for fixed-effects models, if the amount of heterogeneity in the reduced model is equal to zero, or for "rma.mv" objects. This can be regarded as a pseudo latex{$R^2$}html{$R²$}text{$R^2$} statistic (Raudenbush, 2009). Note that the value may not be very accurate unless $k$ is large (Lopez-Lopez et al., 2014).}

References

Lopez-Lopez, J. A., Marin-Martinez, F., Sanchez-Meca, J., Van den Noortgate, W., & Viechtbauer, W. (2014). Estimation of the predictive power of the model in mixed-effects meta-regression: A simulation study. British Journal of Mathematical and Statistical Psychology, 67, 30--48. Raudenbush, S. W. (2009). Analyzing effect sizes: Random effects models. In H. Cooper, L. V. Hedges, & J. C. Valentine (Eds.), The handbook of research synthesis and meta-analysis (2nd ed., pp. 295--315). New York: Russell Sage Foundation. 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/.