Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nationally Representative Individualized Risk Estimation Combining
  Individual Data from Epidemiologic Studies and Representative Surveys with
  Summary Statistics from Disease Registries   Estimating individualized absolute risks is fundamental to clinical
decision-making but are often based on data that does not represent the target
population. Current methods improve external validity by including data from
population registries but require transportability assumptions of model
parameters (relative risks and/or population attributable risks) from
epidemiologic studies to the population. We propose a two-step weighting
procedure to estimate absolute risk of an event (in the absence of competing
events) in the target population without transportability assumptions. The
first step improves external-validity for the cohort by creating
"pseudoweights" for the cohort using a scaled propensity-based kernel-weighting
method, which fractionally distributes sample weights from external probability
reference survey units to cohort units, according to their kernel smoothed
distance in propensity score. The second step poststratifies the pseudoweighted
events in the cohort to a population disease registry by variables available in
the registry. Our approach produces design-consistent absolute risks under
correct specification of the propensity model. Poststratification improves
efficiency and further reduces bias of risk estimates overall and by
demographic variables available in the registry when the true propensity model
is unknown. We apply our methods to develop a nationally representative
all-cause mortality risk model for potential clinical use.

3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs