2014-04-19, version 3.5-0

New R function settings.meta to define and print default settings for
meta-analyses in R package meta

Function metagen:
- Hartung and Knapp method added (previously the rma.uni function from
  R package metafor has been called for this method)
- Paule-Mandel method to estimate between-study variance implemented
  using new internal function paulemandel which is based on R function
  mpaule.default from R package metRology from S.L.R. Ellison
  <s.ellison at lgc.co.uk> (Author of R function mpaule.default is
  S. Cowen <simon.cowen at lgc.co.uk> with amendments by
  S.L.R. Ellison)

Function metacont:
- studies with missing treatment estimate get zero weight in
  meta-analysis

Functions metabin, metacont, metacor, metacr, metagen, metainc, metaprop:
- default values changed according to R function settings.meta

Function metareg:
- use argument method.tau="REML" if this argument is equal to "PM" for
  meta-analysis object

Several help pages updated.


2014-03-26, version 3.2-1

Function forest.meta:
- bug fix such that correct confidence limits for individual studies
  will be printed if argument 'level' in function metabin etc. is not
  equal to the default 0.95. (this bug has been introduced in version
  3.0-0 of meta)


2014-03-12, version 3.2-0

Functions metabin, metacont, metacor, metagen, metainc, metaprop:
- heterogeneity statistics I-squared and H added to R object
- column names changed in list object data (columns starting with a
  "." are used internally in update.meta function)
- internally, string "byvar" is used as default label for grouping
  variable if argument bylab is not provided.

Function metareg:
- internally variable .byvar used instead of byvar to reflect change
  in list object data (see above)

Function update.meta:
- arguments 'byvar' and 'subset' fully functional
- internally variables .TE (etc) used instead of TE (etc) to reflect
  change in list object data (see above)

Functions trimfill.default and trimfill.meta:
- heterogeneity statistics I-squared and H added to R object

Function metagen:
- bug fix such that weights (w.fixed, w.random) are calculated
  correctly if any standard error is missing or zero for Hartung-Knapp
  method (argument hakn=TRUE) or not using the DerSimonian Laird
  method (argument method.tau not equal to "DL")

Function summary.meta:
- implement subgroup analysis for metainc objects
- only (re)calculate heterogeneity statistics (Q, tau-squared,
  I-squared) for R objects generated with older versions of R package
  meta

Function forest.meta:
- groups will not be sorted automatically in alphabetical order (new
  argument 'bysort'). Use argument bysort=FALSE, in order to get the
  old behaviour of forest.meta function.
- only (re)calculate heterogeneity statistics (Q, tau-squared,
  I-squared) for R objects generated with older versions of R package
  meta

Function catmeth (used internally)
- new argument 'tau.preset' to print information if between-study
  variance was prespecified

Function print.meta and print.summary.meta
- argument 'tau.preset' used in call to function catmeth

New internally used functions isquared and calcH

Some help pages updated


2013-12-01, version 3.1-2

Function forest.meta:
- bug fix such that forest plot with subgroups will not result in an
  error message for any meta object besides metaprop objects (this bug
  has been introduced in version 3.1-1 of meta)


2013-11-19, version 3.1-1

Function forest.meta:
- bug fix such that random effects estimate will be printed for
  subgroups for metaprop objects using summary measure "PFT"


2013-11-11, version 3.1-0

New R function metainc (meta-analysis of incidence rates)

Continuity correction:
- R functions metabin and metaprop do no longer print a warning in
  case of studies with a zero cell frequency
- instead information on continuity correction is given under "Details
  on meta-analytical method" if a corresponding meta object is printed

Functions forest.meta, funnel.default, funnel.meta, print.meta,
print.summary.meta, update.meta, catmeth, xlab:
- modified to properly handle R objects of class "metainc"

Function metaprop:
- use correct variable names for 'event' and 'n' in list object data
  if R function metaprop is called without argument data

Function metabin:
- inverse variance method (argument sm="Inverse") is used
  automatically if argument tau.common is TRUE
- bug fix such that call of R function metabin will not result in an
  error message if argument tau.common is TRUE and method is equal to
  "MH" (Mantel-Haenszel method)

Function catmeth (used internally in R function print.summmary.meta):
- print information on continuity correction for objects of class
  metabin, metaprop, and metainc

Function summary.meta:
- modified such that fixed effect and random effects estimates and
  confidence intervals are only (re)calculated for very old versions
  of R package meta (version number < 2.x-x) if argument level.comb
  has not been used

Functions trimfill.meta and trimfill.default:
- new list components lower.fixed, upper.fixed, zval.fixed,
  pval.fixed, lower.random, upper.random, zval.random, pval.random
  added to trimfill R object (should/could have been part of exported
  list since meta, version 2.0-0)

New datasets smoking and lungcancer (example datasets for R function metainc)


2013-09-17, version 3.0-1

Major revision

This update has been declared as major revision as the user interface
has been changed by dropping arguments for the following functions:
- print.meta (arguments level, level.comb, level.prediction removed)
- summary.meta (byvar, level, level.comb, level.prediction)
- metainf (level.comb)
- metacum (level.comb)
- forest.meta (byvar, level, level.comb, level.predict)
This functionality is now provided by R function update.meta - see
help page of R function update.meta for further details.

New function update.meta
- update an existing meta object which was created with R function
  metabin, metacont, metagen, metaprop, or metacor

New function cilayout
- change layout to print confidence intervals (in printout from
  R functions print.meta, print.summary.meta, and forest.meta)

Deprecated function plot.meta removed from R package meta

Functions metabin, metacont, metagen, metaprop, metacor:
- code cleaning (in preparation for R function update.meta)
- new list components:
  - data (original data(set) used in function call)
  - subset (information on subset of original data used in meta-analysis)

Function summary.meta:
- new list components:
  - data (original data(set) used in function call)
  - subset (information on subset of original data used in meta-analysis)

Functions metareg:
- argument 'data' renamed to 'x'
- first two arguments interchanged (which is now in line with other R
  functions from R package meta)
- modified such that information on grouping variable (list element
  'byvar') is utilised if argument 'formula' is missing
- any column from original dataset (list component 'data' in metabin
  object (etc) can be used in meta-regression

Function trimfill.meta:
- new defaults for arguments 'comb.fixed' and 'comb.random'
  (by default only random effects estimate calculated)
- arguments 'sm' and 'studlab' removed (values have been overwritten
  internally anyway)
- new list components (depending on class of meta object used in
  function call):
  - event.e, event.c, event (number of events)
  - n.e, n.c, n (number of observations)
  - mean.e, mean.c, sd.e, sd.c (Mean and standard deviation)
  - cor (correlation)
  - class.x (class of meta object used in function call)

Function trimfill.default:
- new default for argument comb.fixed (by default only random effects
  estimate calculated)

Function metacr:
- new list components for Peto O-E method:
  - event.e, n.e, event.c, n.c

Function metaprop:
- new list component incr.event

Function forest.meta:
- bug fix such that call of forest.meta function will not result in an
  error message in the following setting: (i) effect measure is equal
  to RR, OR, or HR and (ii) argument label is not a logical value.

Function print.summary.meta:
- modified such that "0" instead of "< 0.0001" is printed if
  between-study heterogeneity tau-squared is equal to 0

New function format.tau (used internally):
- print "0" instead of "< 0.0001" tau-squared is zero

Function p.ci (used internally):
- new arguments bracket.left, separator, bracket.right for more
  flexible layouts to print confidence intervals (see also R function
  cilayout)

Several help pages updated.


2013-08-09, version 2.5-1

Function forest.meta:
- new argument just.studlab to change justification of study labels

Function print.meta:
- print correct information on method to calculate approximate
  confidence interval for 'metaprop' objects with a single study

Function trimfill.meta:
- new list components title, complab, outclab, label.e, label.c,
  label.left, label.right which are utilised in other R functions to
  enhance printout (see information on version 2.0-0 of R package
  meta)


2013-07-25, version 2.5-0

Function metacr:
- new arguments prediction and level.predict
  (prediction interval for a new study)
- new argument tau.common (common tau-squared across subgroups)
- new arguments level and level.comb
  (confidence interval for single study / meta-analysis)

Functions trimfill.meta and trimfill.default:
- new arguments prediction and level.predict
  (prediction interval for a new study)

Function forest.meta:
- modified such that heterogeneity statistics are only printed in
  forest plot if results for fixed effect and/or random effects model
  are plotted (new defaults for arguments print.I2, print.tau2, and
  print.pval.Q)

Functions metagen, metabin, metacont, metaprop, metacor:
- modified such that list components comb.fixed, comb.random, and
  prediction are set to FALSE for a single study
  (no meta-analysis for a single study)

Functions print.meta, print.summary.meta:
- new argument logscale which can be used to print results for summary
  measures 'RR', 'OR', 'HR', or 'PLN' on logarithmic scale

Update of several help pages.


2013-06-20, version 2.4-1

Function metaprop:
- bug fix such that call of forest.meta function with metaprop object
  does not result in an error message (bug was introduced with meta,
  version 2.4-0)
- new list components incr, allincr, addincr added to metaprop R
  object (should have been part of exported list since meta,
  version 1.5-0)

Function print.meta:
- new arguments prediction and level.predict to print prediction
  interval for a new study

Function print.summary.meta:
- call of internal function asin2p using argument warn to only print
  warnings if result for fixed effect, random effects model or
  prediction interval are printed

Function forest.meta:
- call of internal function asin2p using argument warn to only print
  warnings if result for fixed effect, random effects model or
  prediction interval are plotted

Function asin2p (used internally for metaprop objects):
- new argument warn to only print a warning in certain situations
  (see comments on functions print.meta and forest.meta)

Help pages metabin, metacont, metacor, metacr, metagen, metaprop:
- example to generate forest plot added


2013-06-17, version 2.4-0

Functions metagen, metabin, metacont, metaprop, metacor:
- new arguments prediction and level.predict
  (prediction interval for a new study)
- new argument tau.common (common tau-squared across subgroups)
- help pages updated accordingly

Function metaprop:
- new default summary measure (sm="PLOGIT")
- argument freeman.tukey removed

Function summary.meta:
- new arguments prediction and level.predict
  (prediction interval for a new study)
- new list component tau.common considered internally (for objects of
  type metagen, metabin, metacont, metaprop, metacor)
- modified such that correct values for list components incr, allincr,
  and addincr of metaprop object are considered in calculations

Function forest.meta:
- modified such that prediction interval can be plotted
  (new arguments: prediction, level.predict, text.predict,
   col.predict, col.predict.lines, fs.predict, fs.predict.labels,
   ff.predict, ff.predict.labels)
- modified such that correct values for list components incr, allincr,
  and addincr of metaprop object are considered in calculations
- modified such that information on confidence limits is printed for
  pooled estimates if CI level is different from CI level for
  individual studies

Function print.summary.meta:
- modified such that a prediction interval is printed if argument
  prediction is TRUE
- new list component tau.common considered internally (for objects of
  type metagen, metabin, metacont, metaprop, metacor)

Function catmeth (only used internally):
- print information if common tau-squared assumed across
  subgroups (argument tau.common)


2013-05-12, version 2.3-0

Function forest.meta:
- modified such that fixed effect and random effects estimates and
  confidence intervals are only (re)calculated for very old versions of
  R package meta (version number < 2.x-x)

Functions metabin:
- bug fix such that function call with arguments sm="RR" and
  allstudies=TRUE does not result in an error message in meta-analyses
  with zero events in both groups


2013-03-20, version 2.2-1

Function forest.meta:
- new argument lab.NA (default: lab.NA=".") to label NAs (in older
  version of R package meta the fixed label 'NA' was used)
- modified such that arguments colgap.forest.left and
  colgap.forest.right are considered (instead of only colgap.forest)

Functions labbe.metabin and labbe.default:
- bug fix such that function call does not result in an error message
  if any event probability is equal to NA

Function format.p (only used internally):
- bug fix such that function call does not result in an error message
  if any NAs were provided in the first function argument


2013-03-12, version 2.2-0

Function metabin:
- modified so that studies with all events in both groups will be
  included in meta-analysis by default (in older versions of R package
  meta these studies were only included if argument allstudies=TRUE)
- modified so that the standard error is positive for studies with all
  events in both groups
  (see Hartung & Knapp (2001), Stat Med, equation (18))

Function forest.meta:
- modified so that values provided by argument xlim will be printed on
  x-axis label for relative effect measures (i.e. argument sm is equal
  to "RR", "OR", or "HR")
- internally calculated default values for arguments smlab.pos and
  xlab.pos changed such that they will always lie within plotting
  range


2012-11-29, version 2.1-4

Functions forest.meta, metacum, metainf and print.meta:
- modified so that backtransformation of Freeman-Tukey Double arcsine
  transformation (argument sm='PFT' in function metaprop) is
  calculated correctly for objects of class 'metacum' and 'metainf'

Function asin2p:
- modified so that values outside the admissible range are set to the
  boundary values (i.e. results in estimated probabilities of 0 or 1).
  A warning is printed in this case.

Help pages metacum and metainf:
- new argument n.harmonic.mean documented


2012-11-20, version 2.1-3

Function forest.meta:
- modified so that the function works for an object of class
  'metacum' or 'metainf' and argument sm equal to 'PFT' which
  previously resulted in an error message
  'Error in if (col$range[1] <= TE.fixed & TE.fixed <= col$range[2]) ...'


2012-10-25, version 2.1-2

Functions forest.meta, metacum, metainf, summary.meta:
 - modified so that the function works if argument 'method.tau' is
   different from the default which previously resulted in an error
   message
   'Error in sqrt(W) %*% X : non-conformable arguments'

Function forest.meta:
- argument 'byvar' uses corresponding list element from
  meta-analysis object as default


2012-08-12, version 2.1-1

Function summary.meta:
- list element 'k0' added to returned object for trim-and-fill method

Function print.summary.meta:
- print number of added studies for trim-and-fill method


2012-05-18, version 2.1-0

Functions trimfill.meta and trimfill.default:
- arguments hakn and method.tau added

Functions metacum and metainf:
- modified so that class 'trimfill' is added to object if function
  metacum or metainf is used on object of class 'trimfill'

Function catmeth, print.meta, print.summary.meta:
- modified so that information on use of trim-and-fill method is
  printed

Functions metabias.meta:
- modified so that error message is printed if used with object of
  class 'metacum' or 'metainf'

Functions funnel.meta:
- modified so that error message is printed if used with object of
  class 'metacum' or 'metainf'
- modified so that by default different plot symbols (argument pch)
  are used with object of class 'trimfill'

Function .onLoad:
- modified so that version nummer of meta package is printed when
  library is loaded

Help pages trimfill.meta and trimfill.default:
- arguments hakn and method.tau documented

Help page funnel.meta:
- changed default for argument pch documented


2012-05-03, version 2.0-4

Function metaprop:
- modified so that variance estimate for log- and logit-transformation
  (sm="PLN" and sm="PLOGIT") is based on Pettigrew et al. (1986).

Reference Pettigrew et al. (1986) has been added to the following help
pages:
- metabin, metaprop


2012-04-17, version 2.0-2

Function metaprop:
- modified so that a warning is printed if any sample size (argument
  n) is smaller than 10 for Freeman-Tukey double arcsine
  transformation, i.e. sm="PFT"


2012-04-04, version 2.0-1

Functions metabin, metacont, metacor, metagen, metaprop:
- modified so that these functions can be used with arguments subset
  and byvar of different length


2012-03-20, version 2.0-0

Major revision

R package meta linked to R package metafor to provide additional
statistical methods, e.g. meta-regression and other estimates for
tau-squared (REML, ...)

New functions:
 - metareg              (meta-regression)
 - metabias             (generic method for function metabias)
 - metabias.default     (generic method for function metabias)
 - metabias.meta        (generic method for function metabias)
 - metabias.rm5         (generic method for function metabias)
 - print.rm5            (generic method for rm5-object)
 - print.summary.rm5    (generic method for rm5-object)
 - summary.rm5          (generic method for rm5-object)
 - catmeth              (function used internally)
 - crtitle              (function used internally)
 - hypergeometric       (function used internally)
 - is.installed.metafor (function used internally)
 - kentau               (function used internally)
 - linregcore           (function used internally)
 - p2logit              (function used internally)

Functions metabin, metacont, metacor, metagen, metaprop:
 - new arguments:
   - hakn (Hartung-Knapp method)
   - method.tau (estimation method for tau-squared)
   - tau.preset (fixed value for tau)
   - TE.tau (pre-specified treatment effect to estimate tau)
   - method.bias (test for funnel plot asymmetry used in metabias)
   - label.left (Label on left side of forest plot, new argument in
                 functions metabin, metacont, and metagen)
   - label.right (Label on right side of forest plot, new argument in
                  functions metabin, metacont, and metagen)
   - warn (print warning messages, new argument in functions metacont
           and metagen)
 - new list components of returned object:
   - se.tau2 (standard error of tau-squared)
   - hakn (Hartung-Knapp method)
   - method.tau (estimation method for tau-squared)
   - tau.preset (fixed value for tau)
   - TE.tau (pre-specified treatment effect to estimate tau)
   - method.bias (test for funnel plot asymmetry used in metabias)
   - label.left (Label on left side of forst plot, new list component
                 in functions metabin, metacont, and metagen)
   - label.right (Label on right side of forst plot, new list component
     in functions metabin, metacont, and metagen)
 - argument 'warn' suppresses more warning messages if FALSE
 - function metabin: studies are excluded from meta-analysis if
   (event.e > n.e | event.c > n.c) or (n.e <= 0 | n.c <= 0) or
   (event.e < 0 | event.c < 0)

Function metacum and metainf:
 - modified so that NULL is returned if function is used with a single
   study
 - modified so that new arguments hakn, method.tau, tau.preset,
   method.bias, label.left, label.right are considered in execution of
   the function
 - argument level removed

Function metaprop:
 - modified so that the correct variance function 1/(n+0.5) instead of
   1/(n+1) is used for the Freeman-Tukey double arcsine transformation
   (i.e. sm="PFT") - see also news on function asin2p

Function asin2p:
 - completely rewritten as back transformation of Freeman-Tukey
   transformed proportions was inaccurate
 - back transformation of Freeman-Tukey proportions according to
   Miller (1978) - see help page of R command metaprop

Function print.metabias:
 - print a warning if number of studies is too small to conduct a
   test for funnel plot asymmetry (see new argument k.min)

Function print.summary.meta:
 - new argument bylab.nchar
 - print test for subgroup differences for both fixed effect and
   random effects model
 - value 'invisible(NULL)' returned for metacum and metainf objects

Function metacr:
 - new arguments:
   - sm (summary measure)
   - method (pooling method)
   - comb.fixed (fixed effect model)
   - comb.random (random effects model)
   - swap.events (only for binary data)
   - method.tau (estimation method for between-study variance)
   - hakn (Hartung-Knapp adjustment)
   - title (Title of Cochrane review)
   - complab (Comparison label)
   - outclab (Outcome label)
   - warn (print warning messages)
 - removed argument:
   - smother (summary measure)
 - value 'NULL' returned if no data is available for selection of
   comp.no and outcome.no

Function read.rm5:
  - changed substantially for reading of RevMan 5.1 files

Function summary.meta:
 - modified so that new arguments hakn, method.tau, tau.preset,
   method.bias are considered in execution of the function
 - argument 'warn' suppresses more warning messages

Function forest.meta:
 - modified so that the treatment effect and 95% confidence interval
   is printed in the correct order for objects of class metaprop if
   argument sort or order is used
 - symmetric forest plot by default (argument xlim="s")
 - new arguments:
   - smlab, smlab.pos, fs.smlab, fflab
     (Label for summary measure - at top of figure)
   - label.right, label.left, fs.lr, ff.lr
     (Label on right and left side)
   - overall.hetstat (heterogeneity information for overall effect)

Function funnel.default and funnel.meta:
 - modified so that arguments col.fixed and col.random are recognised

Function metabias.default and metabias.meta:
 - new argument k.min:
   test for funnel plot asymmetry only conducted if number of studies
   in meta-analysis is larger or equal to k.min
 - new argument '...' (ignored at the moment)

Function trimfill.default and trimfill.meta:
 - value 'invisible(NULL)' returned if number of studies is smaller
   than 3

New datasets: amlodipine, cisapride

File FLEISS93.MTV moved from directory data to directory extdata

Update of several help pages. Some new help pages added.


2010-10-28, version 1.6-1

Function forest.meta:
 - modified so that the number of events is printed in the
   correct order for objects of class metaprop if argument
   sort or order is used
 - modified so that transformed proportions are printed
   for individual studies in column 'TE' if function metagen
   is used with argument sm equal to either 'PLN', 'PLOGIT',
   'PAS', or 'PFT'

Function as.data.frame.meta:
 - modified so that the function works for meta-analyses
   with six studies which previously resulted in an error message
   'Error: evaluation nested too deeply: infinite recursion ...'
 - modified so that additional arguments '...' can be passed to
   function

Function addvar:
 - option stringsAsFactors=FALSE added to internal call of
   R function as.data.frame.meta
 - additional checks for existence of columns by.x and by.y
 - additional checks for situations with duplicate entries
   for columns by.x and by.y added

Function print.meta:
 - modified so that back-transformed proportions are printed
   for individual studies if function metagen is used with
   argument sm equal to either 'PLN', 'PLOGIT', 'PAS', or 'PFT'

Examples given in the following help pages have been (slightly)
updated:
 - read.mtv, read.rm5, metacr


2010-06-21, version 1.6-0

Function forest.meta:
- for subgroup analyses (i.e. groups defined by argument 'byvar'),
  result for both fixed effect and random effects model are printed
  (in older versions of the meta package only results for either
   fixed effect or random effects model could be printed)
- new arguments text.fixed.w and text.random.w to specify label for
  estimates within subgroups
- new arguments to change colour of several parts of the plot:
  col.i.inside.square, col.square, col.square.lines,
  col.diamond, col.diamond.fixed, col.diamond.random,
  col.diamond.lines, col.diamond.fixed.lines, col.diamond.random.lines
- new arguments to print information on heterogeneity measures:
  print.I2, print.tau2, print.Q, print.pval.Q,
  hetstat, hetlab
- new arguments to change fontsize and fontface of several parts
  of the plot:
  fs.heading, fs.fixed, fs.random, fs.study,
  fs.fixed.labels, fs.random.labels, fs.study.labels,
  fs.hetstat, fs.axis, fs.xlab,
  ff.heading, ff.fixed, ff.random, ff.study,
  ff.fixed.labels, ff.random.labels, ff.study.labels,
  ff.hetstat, ff.axis, ff.xlab
- new arguments to change gap between columns
  colgap.left, colgap.right=colgap,
  colgap.forest, colgap.forest.left, colgap.forest.right
- new argument 'just' to change justification of text for
  additional columns
- new argument 'addspace' to print a blank line at top and
  bottom of study results
- argument 'squaresize' supersedes argument 'boxsize'
- new argument 'new' indicating whether a new figure should
  be printed in an existing graphics window
  (internally, the grid.newpage command is used if new=TRUE)
- no line is printed for the fixed effect and random effects
  model if lty.fixed=NULL or lty.random=NULL, respectively
- symmetric forest plots can be produced by setting 
  argument xlim="s"

Function print.summary.meta:
- new argument print.CMH indicating whether Cochran-Mantel-Haenszel
  test for overall effect should be printed (default print.CMH=FALSE)
- For subgroup analyses (i.e. groups defined by argument 'byvar'),
  result for test of heterogeneity printed separately for fixed effect
  and random effects model

Functions metabin and summary.meta:
- new argument print.CMH indicating whether Cochran-Mantel-Haenszel
  test for overall effect should be printed (default print.CMH=FALSE)

The following help pages have been updated:
- forest.meta, metabin, print.summary.meta, summary.meta


2010-05-07, version 1.5-0

Version jump to 1.5-0 as several changes have been implemented.

New functions:
 - metacor        (meta-analysis of correlations)
 - forest         (generic method for forest plots)
 - forest.meta    (generic method for forest plots)
 - radial         (generic method for radial plots)
 - radial.default (generic method for radial plots)
 - radial.meta    (generic method for radial plots)
 - asin2p         (function used internally)
 - logit2p        (function used internally)
 - xlab           (function used internally)
 - z2cor          (function used internally)

Functions forest.meta:
 - new arguments (pooled.totals, pooled.events) to specify whether
   total number of observations and events should be displayed in the plot
 - new argument (pscale) to rescale proportions for objects of class metaprop
 - modified so that argument label is recognised for other
   effect measures than RR, OR, and HR
 - modified so that argument xlim is recognised for other
   effect measures than RR, OR, and HR
 - arguments rightlabs and leftlabs accept NAs for columns
   using default labels
 - modified so that significant digits are printed uniformly
 - correct sum of percentage weight is printed for random effects model
   in forest plots with subgroups
 - x limits (min,max) of the plot are defined by the width of
   confidence intervals instead of (0,1) for objects of class metaprop  

Function metaprop:
 - implementation of additional transformations:
   log transformation, logit transformation, raw, i.e. untransformed, proportions
 - new argument sm to choose summary measure (i.e. transformation)
 - use of argument freeman.tukey is deprecated (use argument sm instead)

Functions funnel and funnel.meta:
 - argument y removed

Functions labbe and labbe.meta:
 - argument y removed

Functions trimfill and trimfill.meta:
 - argument seTE removed

Function summary.meta:
 - new list objects H.w, I2.w, Q.b.fixed and Q.b.random
   for heterogeneity statistics within subgroups

Extension for meta-analysis of correlations:
- forest.meta, metacum, metainf, print.meta,
  print.summary.meta, summary.meta

Function plot.meta:
 - a warning is printed that the function is no longer maintained
   (function forest.meta should be used instead)

New list element version with information on version number of
meta package used to create an object (applies only to object
creating functions, e.g. metabin, metabias).

Update of several help pages.

Use file NEWS instead of ChangeLog to document changes.


2010-01-12, version 1.1-8

Functions summary.meta, print.summary.meta:
 - modified so that a test for subgroup differences
   is not calculated and printed for meta-analyses
   using the Mantel-Haenszel method for binary data


2010-01-11, version 1.1-7

Functions metabin, metacont, metagen, metaprop:
 - modified so that a sensible default value is used for argument bylab
   if argument byvar is not missing


2010-01-11, version 1.1-6

Function forest:
 - modified so that additional columns are printed in the correct order
   if argument sort or order is used


2009-12-21, version 1.1-5

Function forest (incl. help page):
 - new argument digits specifying minimal number of significant digits
   for treatment estimate and its confidence interval


2009-11-04, version 1.1-4

Function summary.meta:
 - modified so that results for subgroups (if byvar != NULL)
   are calculated for both fixed effect and random effects model:
   * list 'within' no longer returned by function summary.meta
   * lists 'within.fixed' and 'within.random' returned by
     function summary.meta
 - modified so that variable name of subgroups is printed
   correctly
 - check whether input is an object of class summary.meta

Function print.summary.meta:
 - modified so that a warning is printed if both comb.fixed and
   comb.random are TRUE and results for subgroups are supposed to
   be printed

Help pages of functions print.summary.meta and forest updated:
 - detailed information on printing and plotting of subgroup
   results if both comb.fixed and comb.random are TRUE

Help page of function metagen updated:
 - new example with meta-analysis of survival data


2009-10-30, version 1.1-3

New functions trimfill, trimfill.default and trimfill.meta:
 - generic method for trim-and-fill method


2009-10-09, version 1.1-2

New functions labbe, labbe.default, labbe.metabin:
 - produce L'Abbe plots

New functions funnel, funnel.default and funnel.meta:
 - generic method for funnel plots

Functions funnel.default and funnel.meta:
 - modified so that contour-enhanced funnel plots can be produced
   (new arguments: contour.levels, col.contour, ref)
 - modified so that study labels can be printed on funnel plot
   (new arguments: studlab, cex.studlab)
 - modified so that line type, width and colour can be changed for
   fixed effect treatment effect
   (new arguments: lty.fixed, lwd.fixed, col.fixed)
 - modified so that random effects treatment effect can be plotted
   (new arguments: comb.random, lty.random, lwd.random, col.random)
 - new default values for arguments:
   * pch=21 (previously: pch=1)
   * comb.fixed=x$comb.fixed
 - modified so that background colour of points in funnel plot can
   be changed
   (new argument: bg)

Function forest:
 - new default values for arguments lab.e and lab.c: x$label.e and
   x$label.c, respectively. If these values are NULL the old default
   values "Experimental" and "Control" are used.

Functions metabin, metacont, metagen:
 - arguments label.e and label.c added

Function metacr:
 - use arguments label.e and label.c in calls to functions
   metabin, metacont, metagen


2009-08-31, version 1.0-6

First major version released on CRAN


No NEWS available for versions < 1.0