Statistical Modelling,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 17, 2024
The
aim
of
this
study
is
to
explore
the
adoption
a
joint
modelling
framework
for
dealing
with
dyadic
and
monadic
count
outcomes
excess
zeros
simultaneously
via
common
latent
structure.
As
case
study,
we
consider
problem
identifying
different
push
pull
factors
cross-border
forced
migration
internal
displacement.
We
full
panel
data
analysis
estimate
random
effects
hurdle
model
following
Bayesian
paradigm;
resultant
posterior
approximated
through
integrated
nested
Laplace
approximation.
Statistical Science,
Journal Year:
2024,
Volume and Issue:
39(1)
Published: Feb. 1, 2024
Software
tools
for
Bayesian
inference
have
undergone
rapid
evolution
in
the
past
three
decades,
following
popularisation
of
first
generation
MCMC-sampler
implementations.
More
recently,
exponential
growth
number
users
has
been
stimulated
both
by
active
development
new
packages
machine
learning
community
and
popularity
specialist
software
particular
applications.
This
review
aims
to
summarize
most
popular
provide
a
useful
map
reader
navigate
world
computation.
We
anticipate
vigorous
continued
algorithms
corresponding
multiple
research
fields,
such
as
probabilistic
programming,
likelihood-free
neural
networks,
which
will
further
broaden
possibilities
employing
paradigm
exciting
Computer Methods and Programs in Biomedicine,
Journal Year:
2023,
Volume and Issue:
231, P. 107403 - 107403
Published: Feb. 3, 2023
Fitting
spatio-temporal
models
for
areal
data
is
crucial
in
many
fields
such
as
cancer
epidemiology.
However,
when
sets
are
very
large,
issues
arise.
The
main
objective
of
this
paper
to
propose
a
general
procedure
analyze
high-dimensional
count
data,
with
special
emphasis
on
mortality/incidence
relative
risk
estimation.
We
present
pragmatic
and
simple
idea
that
permits
fit
hierarchical
the
number
small
areas
large.
Model
fitting
carried
out
using
integrated
nested
Laplace
approximations
over
partition
spatial
domain.
also
use
parallel
distributed
strategies
speed
up
computations
setting
where
Bayesian
model
generally
prohibitively
time-consuming
even
unfeasible.
Using
simulated
real
we
show
our
method
outperforms
classical
global
models.
implement
methods
algorithms
develop
open-source
R
package
bigDM
specific
vignettes
have
been
included
facilitate
methodology
non-expert
users.
Our
scalable
proposal
provides
reliable
estimates
data.
Statistics and Computing,
Journal Year:
2023,
Volume and Issue:
33(5)
Published: July 19, 2023
Despite
the
amount
of
research
on
disease
mapping
in
recent
years,
use
multivariate
models
for
areal
spatial
data
remains
limited
due
to
difficulties
implementation
and
computational
burden.
These
problems
are
exacerbated
when
number
small
areas
is
very
large.
In
this
paper,
we
introduce
an
order-free
scalable
Bayesian
modelling
approach
smooth
mortality
(or
incidence)
risks
several
diseases
simultaneously.
The
proposal
partitions
domain
into
smaller
subregions,
fits
each
subdivision
obtains
posterior
distribution
relative
across
entire
domain.
also
provides
correlations
among
patterns
partition
that
combined
through
a
consensus
Monte
Carlo
algorithm
obtain
whole
study
region.
We
implement
using
integrated
nested
Laplace
approximations
(INLA)
R
package
bigDM
it
jointly
analyse
colorectal,
lung,
stomach
cancer
Spanish
municipalities.
new
permits
analysis
big
sets
better
results
than
fitting
single
model.
Biostatistics,
Journal Year:
2023,
Volume and Issue:
25(2), P. 429 - 448
Published: Aug. 2, 2023
Abstract
Modeling
longitudinal
and
survival
data
jointly
offers
many
advantages
such
as
addressing
measurement
error
missing
in
the
processes,
understanding
quantifying
association
between
markers
events,
predicting
risk
of
events
based
on
markers.
A
joint
model
involves
multiple
submodels
(one
for
each
longitudinal/survival
outcome)
usually
linked
together
through
correlated
or
shared
random
effects.
Their
estimation
is
computationally
expensive
(particularly
due
to
a
multidimensional
integration
likelihood
over
effects
distribution)
so
that
inference
methods
become
rapidly
intractable,
restricts
applications
models
small
number
and/or
We
introduce
Bayesian
approximation
integrated
nested
Laplace
algorithm
implemented
R
package
R-INLA
alleviate
computational
burden
allow
multivariate
with
fewer
restrictions.
Our
simulation
studies
show
substantially
reduces
computation
time
variability
parameter
estimates
compared
alternative
strategies.
further
apply
methodology
analyze
five
(3
continuous,
1
count,
binary,
16
effects)
competing
risks
death
transplantation
clinical
trial
primary
biliary
cholangitis.
provides
fast
reliable
technique
applying
complex
encountered
health
research.
Statistics and Computing,
Journal Year:
2024,
Volume and Issue:
34(3)
Published: April 16, 2024
Abstract
Compositional
Data
Analysis
(CoDa)
has
gained
popularity
in
recent
years.
This
type
of
data
consists
values
from
disjoint
categories
that
sum
up
to
a
constant.
Both
Dirichlet
regression
and
logistic-normal
have
become
popular
as
CoDa
analysis
methods.
However,
fitting
this
kind
multivariate
models
presents
challenges,
especially
when
structured
random
effects
are
included
the
model,
such
temporal
or
spatial
effects.
To
overcome
these
we
propose
Model
(LNDM).
We
seamlessly
incorporate
approach
into
R-INLA
package,
facilitating
model
prediction
within
framework
Latent
Gaussian
Models.
Moreover,
explore
metrics
like
Deviance
Information
Criteria,
Watanabe
Akaike
information
criterion,
cross-validation
measure
conditional
predictive
ordinate
for
selection
CoDa.
Illustrating
LNDM
through
two
simulated
examples
with
an
ecological
case
study
on
Arabidopsis
thaliana
Iberian
Peninsula,
underscore
its
potential
effective
tool
managing
large
databases.
Statistics in Medicine,
Journal Year:
2025,
Volume and Issue:
44(3-4)
Published: Jan. 26, 2025
ABSTRACT
Predicting
cancer‐associated
clinical
events
is
challenging
in
oncology.
In
Multiple
Myeloma
(MM),
a
cancer
of
plasma
cells,
disease
progression
determined
by
changes
biomarkers,
such
as
serum
concentration
the
paraprotein
secreted
cells
(M‐protein).
Therefore,
time‐dependent
behavior
M‐protein
and
transition
across
lines
therapy
(LoT),
which
may
be
consequence
progression,
should
accounted
for
statistical
models
to
predict
relevant
outcomes.
Furthermore,
it
important
understand
contribution
patterns
longitudinal
upon
each
LoT
initiation,
time‐to‐death
or
time‐to‐next‐LoT.
Motivated
these
challenges,
we
propose
Bayesian
joint
model
trajectories
multiple
M‐protein,
competing
risks
death
next
LoT.
Additionally,
explore
two
estimation
approaches
our
model:
simultaneous
all
parameters
(joint
estimation)
sequential
using
corrected
two‐stage
strategy
aiming
reduce
computational
time.
Our
proposed
methods
are
applied
retrospective
cohort
study
from
real‐world
database
patients
diagnosed
with
MM
US
January
2015
February
2022.
We
split
data
into
training
test
sets
order
validate
both
make
dynamic
predictions
times
until
interest,
informed
longitudinally
measured
biomarkers
baseline
variables
available
up
time
prediction.
BMC Public Health,
Journal Year:
2023,
Volume and Issue:
23(1)
Published: May 22, 2023
Abstract
Background
Climate
change
is
increasing
the
dispersion
of
mosquitoes
and
spread
viruses
which
some
are
main
vectors.
In
Quebec,
surveillance
management
endemic
mosquito-borne
diseases,
such
as
West
Nile
virus
or
Eastern
equine
encephalitis,
could
be
improved
by
mapping
areas
risk
supporting
vector
populations.
However,
there
currently
no
active
tool
tailored
to
Quebec
that
can
predict
mosquito
population
abundances,
we
propose,
with
this
work,
help
fill
gap.
Methods
Four
species
mosquitos
were
studied
in
project
for
period
from
2003
2016
southern
part
province
Quebec:
Aedes
vexans
(VEX),
Coquillettidia
perturbans
(CQP),
Culex
pipiens-restuans
group
(CPR)
Ochlerotatus
stimulans
(SMG)
species.
We
used
a
negative
binomial
regression
approach,
including
spatial
component,
model
abundances
each
function
meteorological
land-cover
variables.
tested
several
sets
variables
combination,
regional
local
scale
landcover
different
lag
day
capture
weather
variables,
finally
select
one
best
Results
Models
selected
showed
importance
independently
environmental
at
larger
scale.
these
models,
most
important
predictors
favored
CQP
VEX
‘forest’,
‘agriculture’
(for
only).
Land-cover
‘urban’
had
impact
on
SMG
CQP.
The
conditions
trapping
previous
summarized
over
30
90
days
preferred
shorter
seven
days,
suggesting
current
long-term
effects
abundance.
Conclusions
strength
component
highlights
difficulties
modelling
abundance
selection
shows
selecting
right
predictors,
especially
when
choosing
temporal
landscape
group,
it
possible
consider
their
use
predicting
variationsin
potentially
harmful
public
health
Quebec.