Description Usage Arguments Value
This function assesses during the jointmeta1
fit whether
results from separate longitudinal and time-to-event models were requested,
and supplies their results if they were.
1 |
ests |
estimates from initial longitudinal or survival analyses |
logical |
a logical value indicating whether or not results from separate longitudinal and survival analyses were requested. |
A list of results from the separate longitudinal and survival fits. The components of this list are:
longests
a list containing estimates from the initial longitudinal fit. The components of this list are:
beta1
a data frame of the estimates of the fixed effects from the longitudinal sub-model
sigma.e
the value of the variance of the measurement error from the longitudinal sub-model
D
the estimate of the covariance matrix for the individual level random effects. Individual level random effects are always included in the joint model
A
the estimate of the covariance matrix for the study level
random effects. This is only present if study level random effects are
specified in the jointmeta1
function call.
log.like.long
the numeric value of the log likelihood for the initial longitudinal model.
randstart.ind
a list of the conditional modes of the individual level random effects in each study given the data and the estimates of the separate longitudinal model parameters
randstart.ind.cov
a list of the conditional covariance matrices for each individual for the individual level random effects given the data and the estimates of the separate longitudinal model parameters
randstart.stud
a data frame containing the conditional modes
of the study level random effects given the data and the estimates of the
separate longitudinal model parameters. This is only present if study
level random effects were specified in the jointmeta1
function call.
randstart.stud.cov
a list of conditional covariance matrices
for each study for the study level random effects given the data and the
estimates of the separate longitudinal model parameters. This is only
present if study level random effects were specified in the
jointmeta1
function call.
modelfit
the initial longitudinal model fit. The model has
the same specification as the longitudinal sub-model for the joint model,
fitted using the lmer
function from package
lme4
survests
a list containing estimates from the initial survival fit. The components of this list are:
beta2
vector of the estimates of the fixed effects included in the survival model.
haz
if strat = TRUE
then this is a list of numeric
vectors of length equal to the number of studies in the dataset, giving the
study specific baseline hazard. If strat = FALSE
then the baseline
is not stratified by study, and this is one numeric vector giving the
common baseline across studies.
rs
a counter to indicate the last how many unique event times had occured by the individual's survival time - this is for use during further calculation in the joint model EM algorithm. If a stratified baseline this is a list of numerical vectors, whereas if the baseline is not stratified this is a single numeric vector.
sf
the unique event times observed in the dataset. If a stratified baseline this is a list of numerical vectors, whereas if the baseline is not stratified this is a single numeric vector.
nev
a counter of the number of events that occur at each event time.If a stratified baseline this is a list of numerical vectors, whereas if the baseline is not stratified this is a single numeric vector.
log.like.surv
a numeric containing two values, the
log-likelihood with the initial values and the log-likelihood with the
final values, see coxph.object
modelfit
the initial survival model fit. The model has the
same specification as the survival sub-model for the joint model, fitted
using the coxph
function from package
survival
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