Changes in version 1.1.10 (2020-01-08)
o Fixed compatibility with R version 4,
by exchanging uses of the function class
with the function inherits in conjunction
with try. Also repleced class by inherits
when checking the class of objects.
o Changed Depends to Imports. This means that
the packages nleqslv, survival, Rcpp and
data.table are no longer automatically
loaded when drgee is loaded.
Changes in version 1.1.9 (2019-09-09)
o Fixed a bug that caused R to crash when the
clustering variable was a factor.
o The object returned from gee now contains the
original formula object and the original dataset
o The object returned from drgee now contains the
original formula objects and the original dataset
Changes in version 1.1.8 (2019-05-13)
o Fixed a bug regarding the ordering of observations
in the data returned from gee and drgee
Changes in version 1.1.7 (2019-04-09)
o Updated the contact information for Johan Zetterqvist.
o The functions drgee and gee now
returns U - the residuals from
the estimating equations evaluated
at the estimated values of the
parameters.
They also return the matrix
d.U.sum - the sum of the derivatives
of the estimating equations
evaluated at the estimated values of
the parameters.
o A function robustVcov takes U, d.U.sum
and an optional clustervariable as
arguments and returns the asymptotic
variance matrix.
o It is now possible to use a subset
argument in the functions drgee
and gee
o For conditional gee, it is now
possible to adjust for another
clustervariable than the one
used in the analysis (assuming)
that the old clustervariable
is contained within the new
Changes in version 1.1.6 (2016-11-07)
o Added a helper function to obtain
score residuals from clogit
given the estimated coefficients,
the observed outcomes,
the design matrix
and the id vector.
o Fixed a bug when using retrospective
conditional logistic regression
o Add doubly robust estimation in
conditional logistic models
Changes in version 1.1.5 (2016-04-25)
o Bugfixes
Changes in version 1.1.4 (2016-01-13)
o In some data manipulation steps, the data.table
package is used to obtain better speed.
o For estimation in conditional logistic models
only outcome-discordant clusters are used
o Calculation of residuals for estimating equations
for conditional logistic models implemented in C++
using the Rcpp and RcppArmadillo packages.
o Drops unused levels for factor variables
Changes in version 1.1.3 (2015-06-23)
o Fixed a bug in 'drgeeData' which caused an error
when one of the nuisance models only contained an
intercept
Changes in version 1.1.2 (2015-05-18)
o Fixed a bug in 'drgeeData' for the 'estimation.method'
which happened when 'cond = TRUE' and 'olink = "logit"'.
Changes in version 1.1.1 (2015-05-09)
o Fixed a bug in 'drgeeData' that caused error when
no data argument is supplied.
o There was an error in the previous version, when
the function 'drgeeData' removed outcome concordant
cluster for conditional methods. This is now corrected
such that this only happens for conditional logistic
methods.
Changes in version 1.1.0 (2015-04-20)
o The arguments 'outcome', 'exposure' and 'clusterid'
can be supplied as vectors or as a string.
o Changed the interface for the 'drgee' function.
Now the argument 'estimationMethod' has to be
"dr","o", or "e" corresponding to previous choices
"dr", "obe" and "ebe".
When 'estimationMethod="o"', the user can supply an
argument 'exposure' instead of 'emodel'. Similarly,
when 'estimationMethod="e"', the user can supply an
argument 'outcome' instead of 'omodel'.
o Changed the functions 'drgee' and 'gee' such
that they always return the variance as a matrix.
o Added a function 'gee' which calculates all
coefficients in a regression.
o Added an option 'cond' for 'drgee' and 'gee' for
models with cluster-specific intercepts.
Changes in version 1.0.1 (2014-01-27)
o Fixed a bug in 'drFit'. The calculation of the
Jacobian was incorrect for doubly robust estimation
with outcome link logit, resulting in inconsistent
estimates of standard errors. This bug is now fixed.
Changes in Version 1.0 (2013-12-19)
o First version released on CRAN