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news:news [2021/04/25 19:32] Wolfgang Viechtbauer |
news:news [2021/06/09 12:58] Wolfgang Viechtbauer |
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+ | ==== June 9th, 2021: Version 3.0 Released on CRAN ==== | ||

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+ | A new version of the metafor package (version 3.0) has been published on CRAN. This version includes a lot of updates that have accumulated in the development version of the package over the past 14-15 months. Some highlights: | ||

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+ | * The documentation has been further improved. I now make use of the [[https:// | ||

+ | * '' | ||

+ | * As another technique related to publication/ | ||

+ | * The '' | ||

+ | * One can now also fit so-called ' | ||

+ | * The '' | ||

+ | * Two functions were added that are related to the meta-analysis of correlation matrices / regression coefficients: | ||

+ | * Sometimes, it might be necessary to aggregate a meta-analytic dataset with multiple outcomes from the same study to the study level. An '' | ||

+ | * When using functions that allow for parallel processing, progress bars can now also be shown, thanks to the [[https:// | ||

+ | * 24 new datasets were added (there are now over 60 datasets included in the package). These datasets also cover advanced methodology, | ||

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+ | Lots of smaller tweaks/ | ||

==== April 21st, 2021: Better Degrees of Freedom Calculation ==== | ==== April 21st, 2021: Better Degrees of Freedom Calculation ==== | ||

- | In random/((In a random-effects model, there is just one coefficient,In general, it is better to use the Knapp-Hartung method for this purpose, which does two things: (1) the standard errors of the model coefficients are estimated in a slightly different way and (2) a t-distribution is used with $k-p$ degrees of freedom (where $k$ is the total number of estimates and $p$ the number of coefficients in the model). When conducting a simultaneous (or ' | + | In random/ |

The Knapp-Hartung method cannot be directly generalized to more complex models as can be fitted with the [[https:// | The Knapp-Hartung method cannot be directly generalized to more complex models as can be fitted with the [[https:// |

news/news.txt ยท Last modified: 2021/11/25 09:24 by Wolfgang Viechtbauer

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