v1.4
2012-11-06
-. an internal bug fixed when specifying selec for a particular row-varible in building Xlong attribute for compareGroups object.
-. cGroupsGUI: improved, more compact.

v1.3
2012-07-19
-. createTable objects can be plotted and it is also possible to apply varinfo function on them.
-. cGroupsGUI: new smaller frame.
-. createTable: new argument q.type, to specify how the quartiles (percentiles) are displayed for a non-normal distributed row-variable.
-. createTable: new argument sd.type, to allow the user change the format in displaying SD; 1-inside brackets (default), 2- mean +/- SD.
-. createTable: new argument digits.p added, to allow the user specify the number of decimals for all p-values displayed on the bivariate table.
-. createTable: new argument p.ratio has been added. This computes de p-value corresponding to each OR/HR individually.
-. Nmax reported changed: now it represents the number of patients with at least un valid value across all analized variables.
-. a bug fixed in compareGroup: when some row-variable could not be performed 'varnames.orig' attribute was bad built. This affected other functions such as createTable.
-. a bug fixed in [.createTable: an error ocurred when a literal category specified to be hiden when subsetting a createTable object.
-. MINOR CHANGE: 1.95 replaced by 1.96 in 'compareGroups.Rd' file.

v1.2
2012-07-10
-. export2html: a bug fixed in N.
-. repeated row-variables are kept after applying the generic function 'update'. This was not possible in the previous version 1.1.
-. new internal function 'simplify.formula' added.

v1.1
2012-05-13
-. [.compareGroups: a bug fixed when a row-variable present multiple times.
-. compareGroups: new argument 'compute.ratio'.
-. compareGroups: default value for argument 'simplify' changed to TRUE.
-. load tcltk only when cGroupsGUI is called.
-. bug fixed in export2latex.cbind.createTable when drawing hlines.
-. export2latex: apostrophes have been changed from '' to `' in writing default table caption.

v1.0
2011-11-29
-MAIN CHANGES
	- new method '[' implemented for createTable objects.
	- new method rbind implemented for compareGroups and createGroups objects.
	- new method cbind implemented for createTable objects.
	- new method summary implemented for createTable objects.
- createTable: new value for type (3) displays only absolute frequencies for categorical variables.
- export2latex.createTable, export2latex.cbind.createTable: new argument 'label' implemented to put a label for each table to be cited in the main LaTeX document.
- chisq.test2: computes simulated p-values for the chi-squared test when it is not possible to compute assymptotic nor exact fisher test. 
- compareGroups: new argument 'p.mult.corrected' added that gives the option of computing multiple comparison corrected p-values or non-corrected p-values.
- regicor: some variables names have been changed (gender to sex, histbp to histhtn).
- example data sets: 'myData' example data set has been removed and 'regicor' data set is used in the examples instead.


v0.1-6
2010-03-25
- MAIN CHANGES
	- compareGroups: can deal with Surv objects as response variables in order to compute appropiate p-values for a cohort (time-to-response) studies.
	- plot.compareGroups: perform appropiate plots when response is of class 'Surv' (kaplan-meier, etc.)
	- export2html: new function created to export tables to HTML format
	- plot.compareGroups: new internal functions created to draw proper plots for survival class variables	
- createTable: new argument 'show.p.overall'.
- createTable: change default value for 'show.p.all' argument to FALSE.
- export2csv and export2html: new argument created which is the same as 'which.table' in 'export2latex' function
- plot.compareGroups: bug fixed in performing shapiro-Wilks test on >5000 size sample.
- export2latex: new arguments 'caption' and 'loc.caption' added.
- argument silent set to TRUE in all functions where try have been applied.


v0.1-5
2010-08-20
- print.createTable: lines in header and botoom of the tables are printed, using some characters from integer2ascii function of oce package.
- print.createTable, export2latex, export2csv: new argument 'nmax' added.
- export2latex: environment longtable is used, instead of table.
- compareGroups: new argument 'simplify' added.
- MAIN change: it is possible not to specify any grouping variable, and descriptives for all sample are performed without p-values.
- print.createTable, export2latex, export2csv: bug fixed when row-variables with no data present.
- plot.compareGroups method now plots barplots for categorical variable, as well as bivariate plots (row-variables vs grouping variable).
- [.summary.compareGroups method deleted and new [.compareGroups method created instead.
- export2csv: now writes the N (sample size) for each group in the header line.
- createTable: argument 'hide' changed, now the user can specify either the position of the cateogory to be hidden or the name of this category.
- createTable: new argument 'hide.no' added, that allows the user to specify which category to be hidden for all 2-level row-variables.
- createTable: bug fixed, when only 1 row-variable and show.all=FALSE.
- print.createTable changed: 'which.table' argument added that specifyies which table is printed (descr, avail or both). By default, only 'descr' table is printed.
- export2latex: 'which.table' argument added add an argument that specifyies which table is printed (descr, avail or both). By default, only 'descr' table is printed.
- export2latex: 'file' argument can be missing. In this case, LaTex code is printed in the R console. This function returns the LaTeX code like print.xtable does. 
- export2latex: 'size' argument added.
- compareGroups.formula: bug fixed in removing variables using '-'.
- compare.i: bug fixed in p-value for multiple comparison for a normal row-variable.
- createTable: automatacally detects if grouping variable is an ordered factor to display p-trend.

v0.1-4
2010-07-30
- print.compareGroups: fix a bug, significant p-values codes 0.01 has been replaced by 0.1 
- export2latex: substitute some special character ($, <, >, >=, <=, &, ...) in the grouping variable label, and '&' for row-variables and group levels.
- compareGroups.default: added an option to specify different quantiles from Q1 and Q3  (min and max for example) for non-normal variables.
- [.summary.compareGroups method

V0.1-3
2010-07-27
- fixed a bug in 'print.createTable', 'export2csv' and 'export2latex' functions when there is only one row-variable

v0.1-2
2010-07-27
- MAIN CHANGE: submitted to CRAN.
- package no more available in www.regicor.org

v0.1-1
2010-07-26
- fixed a bug in 'print.createTable', 'export2csv' and 'export2latex' functions when there is only one group
- some words changed in help documentation

v0.1-0
2010-06-22
- 'compareGroups' created and uploaded in www.regicor.org
