Description Usage Arguments Value Author(s) References See Also
fitmle.cov
is a secondary function called during estimation runs. It
performs multiple tasks after completion of the model optimization by
fitmle
:
1- It computes the matrix of covariance (as described by D'Argenio and
Schumitzky) by calling get.cov.matrix
and derives some related
statistics: correlation matrix, coefficient of variation of parameter
estimates, confidence intervals and Akaike Information criterion,
2- It estimates secondary parameters and computes the coefficient of variation of those estimates, as well as the confidence intervals.
fitmle.cov
is typically not called directly by users.
1 2 | fitmle.cov(problem = NULL,
Fit = NULL)
|
problem |
A list containing the following levels:
|
Fit |
A list of containing the following levels:
|
Return a list containing the following elements:
The vector of final parameter estimates.
The minimal value of the objective function.
The matrix of covariance for the parameter estimates.
A data.frame with the same structure as
problem$init
but only containing the sorted estimated estimates.
The sorting is performed by order.param.list
.
The upper triangle of the correlation matrix for the parameter estimates.
The coefficients of variations for the parameter estimates.
The confidence interval for the parameter estimates.
The Akaike Information Criterion.
A list of data related to the secondary parameters, containing the following elements:
The vector of secondary parameter estimates calculated using the initial estimates of the primary model parameters.
The vector of secondary parameter estimates calculated using the final estimates of the primary model parameters.
The vector of names of the secondary parameter estimates.
The matrix of partial derivatives for the secondary parameter estimates.
The matrix of covariance for the secondary parameter estimates.
The coefficients of variations for the secondary parameter estimates.
The confidence interval for the secondary parameter estimates.
Sebastien Bihorel (sb.pmlab@gmail.com)
Pawel Wiczling
D.Z. D'Argenio and A. Schumitzky. ADAPT II User's Guide: Pharmacokinetic/ Pharmacodynamic Systems Analysis Software. Biomedical Simulations Resource, Los Angeles, 1997.
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