Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Systematic errors in estimates of $R_t$ from symptomatic cases in the
  presence of observation bias   We consider the problem of estimating the reproduction number $R_t$ of an
epidemic for populations where the probability of detection of cases depends on
a known covariate. We argue that in such cases the normal empirical estimator
can fail when the prevalence of cases among groups changes with time. We
propose a Bayesian strategy to resolve the problem, as well as a simple
solution in the case of large number of cases. We illustrate the issue and its
solution on a simple yet realistic simulation study, and discuss the general
relevance of the issue to the current covid19 pandemic.

5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph