features
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features [2020/08/09 16:39] – [Datasets] Wolfgang Viechtbauer | features [2020/11/17 06:57] – [Notes] Wolfgang Viechtbauer | ||
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Below is an overview of the various features provided by the metafor package. Where applicable, function names are also indicated. | Below is an overview of the various features provided by the metafor package. Where applicable, function names are also indicated. | ||
- | ==== Effect | + | ==== Calculation of Effect |
+ | |||
+ | The package allows the user to calculate various effect sizes and outcome measures frequently used in meta-analyses ('' | ||
- | The package allows the user to calculate various effect size and outcome measures frequently used in meta-analyses ('' | ||
* risk differences, | * risk differences, | ||
* incidence rate ratios and differences for two-group person-time data, | * incidence rate ratios and differences for two-group person-time data, | ||
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The package provides a variety of models and analysis approaches, including: | The package provides a variety of models and analysis approaches, including: | ||
+ | |||
* fixed-, random-, and mixed-effects models using the inverse-variance method ('' | * fixed-, random-, and mixed-effects models using the inverse-variance method ('' | ||
- | * Mantel-Haenszel and Peto's (one-step) method for 2×2 table and two-group person-time data ('' | + | * the Mantel-Haenszel and Peto's (one-step) method for 2×2 table and two-group person-time data ('' |
* generalized linear (mixed-effects) models (i.e., mixed-effects (conditional) logistic and Poisson regression models) for the analysis of 2×2 table data, two-group person-time data, proportions, | * generalized linear (mixed-effects) models (i.e., mixed-effects (conditional) logistic and Poisson regression models) for the analysis of 2×2 table data, two-group person-time data, proportions, | ||
* models for multilevel and multivariate meta-analyses ('' | * models for multilevel and multivariate meta-analyses ('' | ||
* models for network meta-analyses and mixed treatment comparisons ('' | * models for network meta-analyses and mixed treatment comparisons ('' | ||
- | * phylogenetic meta-analysis | + | * models for phylogenetic meta-analyses |
* spatio-temporal meta-analytic models ('' | * spatio-temporal meta-analytic models ('' | ||
* subgrouping and (mixed-effects) meta-regression analyses, | * subgrouping and (mixed-effects) meta-regression analyses, | ||
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The package provides functions for creating a variety of meta-analytic plots and figures, including: | The package provides functions for creating a variety of meta-analytic plots and figures, including: | ||
+ | |||
* funnel plots ('' | * funnel plots ('' | ||
* forest plots ('' | * forest plots ('' | ||
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* profile likelihood plots ('' | * profile likelihood plots ('' | ||
* normal quantile-quantile (QQ) plots ('' | * normal quantile-quantile (QQ) plots ('' | ||
+ | |||
R itself also provides extensive and very flexible graphing and plotting capabilities that can be easily adapted to create further plots and figures. | R itself also provides extensive and very flexible graphing and plotting capabilities that can be easily adapted to create further plots and figures. | ||
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The presence of publication bias (or more accurately, funnel plot asymmetry or " | The presence of publication bias (or more accurately, funnel plot asymmetry or " | ||
+ | |||
* the rank correlation test ('' | * the rank correlation test ('' | ||
* Egger' | * Egger' | ||
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* the Henmi and Copas approach ('' | * the Henmi and Copas approach ('' | ||
* a file drawer analysis (fail-safe N computation) using the Rosenthal, Orwin, and Rosenberg methods ('' | * a file drawer analysis (fail-safe N computation) using the Rosenthal, Orwin, and Rosenberg methods ('' | ||
- | * the test of excess significance ('' | + | * the test of excess significance ('' |
+ | * selection models ('' | ||
==== Inference Methods ==== | ==== Inference Methods ==== | ||
The package provides standard and advanced methods for drawing inferences based on meta-analytic data and for assessing the model fit, including: | The package provides standard and advanced methods for drawing inferences based on meta-analytic data and for assessing the model fit, including: | ||
+ | |||
* likelihood ratio and Wald-type tests ('' | * likelihood ratio and Wald-type tests ('' | ||
* confidence intervals for heterogeneity statistics ('' | * confidence intervals for heterogeneity statistics ('' | ||
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* simulation of data from a fitted model ('' | * simulation of data from a fitted model ('' | ||
- | ==== Outlier | + | The package is also compatible with the [[https:// |
+ | |||
+ | ==== Outlier/Influence Diagnostics ==== | ||
Various methods are available to identify outliers and/or influential studies, and for conducting sensitivity analyses, including: | Various methods are available to identify outliers and/or influential studies, and for conducting sensitivity analyses, including: | ||
+ | |||
* raw/ | * raw/ | ||
* DFFITS values, Cook's distances, covariance ratios, and DFBETAS values ('' | * DFFITS values, Cook's distances, covariance ratios, and DFBETAS values ('' | ||
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==== Notes ==== | ==== Notes ==== | ||
- | A diagram showing the various functions in the metafor package (and how they related to each other) can be found {{docs:diagram.pdf|here}}. If the package is installed, you should also be able to open this diagram directly from R with the command '' | + | A diagram showing the various functions in the metafor package (and how they related to each other) can be found [[diagram|here]]. If the package is installed, you should also be able to open this diagram directly from R with the command '' |
The metafor package is a work in progress and is updated on a regular basis with new functions and options. Under the [[updates|log of package updates]], you can see what changes/ | The metafor package is a work in progress and is updated on a regular basis with new functions and options. Under the [[updates|log of package updates]], you can see what changes/ | ||
features.txt · Last modified: 2024/06/12 18:27 by Wolfgang Viechtbauer