Minor changes
* Some functions imported from mixmeta are now exported in the namespace of
mvmeta directly. This prevents issues with reverse dependencies with other
packages calling mvmeta.
* The package does not attach mixmeta anymore when loaded.
Major changes
* The package is not superseded by the new package mixmeta. The users are
strongly suggested to to replace it with the new package, as the
development of mvmeta is now discontinued.
* Some functions are now imported from mixmeta, which is included in the
dependencies.
* Change in mvmeta() to comply with changes in R 4.0.0 regarding the new
class for matrix objects, now including 'array'.
Minor changes
* ChangeLog replaced by NEWS.
* Updated references, including the main one for the extended framework
implemented in the new package mixmeta.
Minor changes
* Updated web links.
Minor changes
* Two useless lines of code excluded from methods na.omit() and na.exclude()
for objects data.frame.mvmeta. The bug was identified by the CRAN (Kurt
Hornik).
Minor changes
* added importFrom(utils, modifyList) to namespace.
Minor changes
* Fixed bug in mvmeta.vc which prevented using this method in the presence
*f missing values.
* Documentation changed accordingly.
Minor changes
* Models fitted using ikelihood-based estimators now return also the objects
'par' and (optionally) 'hessian'. The former are the original parameters
estimated in the optimization process, corresponding to trasformations of
entries of the between-study (co)variance matrix of random effects,
depending on the chosen structure. The latter is the related Hessian
matrix, which is only returned with argument 'hessian=TRUE' (default to
FALSE) in mvmeta.control().
* Documentation changed accordingly.
Major changes
* Function augment() included in version 0.4.4 is replaced by inputna(). The
reason is the potential confusion in terminology with data augmentation
performed in network meta-analysis.
Minor changes
* Fixed bug in mkS() occurring with univariate models and S supplied as a
list.
* Documentation changed accordingly.
Major changes
* Data augmentation now available trhough the new function augment(). This
is called internally with the argument 'augment' in the control list.
* Help pages of data sets changed to avoid warnings, as requested by the
R CRAN.
Minor changes
* Documentation changed accordingly.
Major changes
* New argument 'bscov' in mvmeta() to structure the between-study
(co)variance matrix Psi. New functions initpar() and par2psi() to set the
initial values and derive Psi depending on the structure and type of
parameterization. New function checkPD to check positive definiteness.
#### Minor changes to functions mvmeta.ml(), mvmeta.reml() and other likelihood
functions. New help page mvmetaCovStruct with info.
* Added the option to input within-study correlations, when not provided,
thorugh the argument 'Scor' in the control list. Added function
inputcov() to input (co)variance matrices directly. Modifications to
mvmeta.fit(), mvmeta.control(), mkS().
* Starting values are now set through the new function initPar(). The values
can be submitted through the argument 'initPsi' in the control list. If
left NULL (the default), iter.igls() is called.
* Changes to mvmeta.control(): arguments 'initPsi', 'Psifix', 'Psicor' and
'Scor' to set initial values, to specify fixed Psi, correlations in Psi
and correlations in S.
* Bug fixed in mvmeta(): call to define argument 'S' now set with correct
environment. Previously possible conflicts with suggested packages.
* New data sets added: fibrinogen, hsls, hyp, p53, and smoking. Many
examples included in help pages.
Minor changes
* New code section in mvmeta() to set the fitting method and the structure
*f Psi.
* Small changes in the code of the function mvmetaSim().
* Function mvmeta.igls() renamed iter.igls(). Functions mvmeta.ml* and
mvmeta.reml* renames mlprof* and remlprof*.
* Various internal function renamed without the initial dot '.'.
* Modification to print() method of summary.mvmeta objects.
* Special quotes "`" removed from names of the functions (this prevented
the debugging tools of RStudio to work).
* Documentation changed accordingly.
Major changes
* A new estimation method based on variance components has been added.
* New arguments 'sd' and 'cor' added to mvmetaSim().
Minor changes
* Modified print method for summary.mvmeta objects.
* summary.mvmeta() and its print method improved.
* Argument set.negeigen added to mvmeta.control().
* Documentation changed accordingly.
Major changes
* An estimation method based on method of moments has been added, using
method="mm" in mvmeta(). The algorithm is implemented in the function
mvmeta.mm().
* Function metaSim() and method simulate.mvmeta() added. These functions
simulate data for multivariate and univariate meta-analysis from
used-defined data or from a fitted model, respectively.
* New control parameters added in mvmeta.control().
Minor changes
* Bug fixed in mvmeta() with subset.
* Documentation changed accordingly.
Minor changes
* Bug fixed in coef.mvmeta() when k=1.
Minor changes
* Bug fixed in .mkS() when k=1 and S is a list.
Major changes
* The internal structure of the package has been substantially revised, with
the aim to improve efficiency, stability and reliability. The function
mvmeta() now resembles the standard regression functions such as lm() and
glm(). These changes will also hopefully make easier further extensions
and improvements. Specific changes are described below.
* Estimation procedure divided in steps: mvmeta() calls mvmeta.fit(), a
wrapper for specific fitting functions mvmeta.fixed(), mvmeta.ml(), and
mvmeta.reml(). The last two in turns call optim(), based on new likelihood
functions with suffix .fn and .gr to compute the likelihood and the
partial derivatives. The procedure is 15-25% faster.
* The structure of mvmeta() now is that of a proper regression function,
properly based on model frames and terms objects. This allows icluding
*ffset, extracting residuals, fitted values and the model matrix, among
*ther benfits. Several default methods for regression functions are now
available for mvmeta objects.
* Handling of missing values exploits the new structure based on model
frame with additional class "data.frame.mvmeta". Method function na.omit()
and na.exclude() have been added to properly define missing observations.
* The method summary() now returns an object of class "summary.mvmeta", with
a similar structure and printing methods of those of lm() and glm().
* New function mvmeta.control() to provide different options in several
steps of the model fitting. Likely to be extended in future versions.
* Several new internal functions have been added but not exported in the
namespace. All the method functions are now exported and documented.
Minor changes
* Changed dependencies: not based anymore on functions in package Matrix.
* AIC() and BIC() are now based on the default methods.
* Coefficients are now reported in matrix form.
* Labels are now internally defined and handled.
* The help page mvmetaObjects have been added.
Minor changes
* Computation of quantities for Q test moved from qtest to mvmeta.
* Q test output now includes also tests for single outcomes.
* Warning added to mvmeta when convergence not reached.
* Bug fixed in mvmeta when formula is not specified.
* beta changed to coef for coherence with other regression functions.
* Simplified output of predict() and blup(): vector for meta-analysis or
single prediction. Also label pred changed to fit, coherently with other
regression functions.
Minor changes
* Depends changed to R (>= 2.13.0).
Major changes
* The argument 'formula' now accept also matrix-type objects for simple
meta-analysis.
* Included 'fnscale=-1' for optim() and changed the sign of the
estimation algorithms: now the function maximizes.
* Also 'S' and 'mlab' now can be stored in 'data'.
* Included labels in the dataframe 'berkey98'.
Minor changes
* Documentation changed accordingly.
Minor changes
* Fixed bug in printing of qtest.mvmeta().
* Documentation changed accordingly.
Major changes
* The arguments 'y' and 'X' has been replaced by 'formula' in mvmeta().
Now the model is specified through a formula, making easier the
inclusion of factors and other variable transformation.
* The objects 'class', 'contrasts' and 'model' have been added to mvmeta
*bjects, storing info about the fitted model. In particular, method
functions such as predict now use model.matrix() and other functions
to re-build the model.
* The function kXlistmk() has been excluded from the package. Now the
Kronecker expansion is performed directly in the code. The argument
'cen' has been excluded from 'mvmeta().
Minor changes
* Changes in dependencies: created a new generic for blup(), in order
to avoid the loading of metafor and its initial message. Function
rankMatrix() imported from Matrix to check full-rank of desing matrix.
* Documentation changed accordingly.