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baselinenowcast  

Baseline Nowcasting for Right-Truncated Epidemiological Data
View on CRAN: Click here


Download and install baselinenowcast package within the R console
Install from CRAN:
install.packages("baselinenowcast")

Install from Github:
library("remotes")
install_github("cran/baselinenowcast")

Install by package version:
library("remotes")
install_version("baselinenowcast", "0.2.0")



Attach the package and use:
library("baselinenowcast")
Maintained by
Kaitlyn Johnson
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2026-02-03
Latest Update: 2026-02-03
Description:
Nowcasting right-truncated epidemiological data is critical for timely public health decision-making, as reporting delays can create misleading impressions of declining trends in recent data. This package provides nowcasting methods based on using empirical delay distributions and uncertainty from past performance. It is also designed to be used as a baseline method for developers of new nowcasting methods. For more details on the performance of the method(s) in this package applied to case studies of COVID-19 and norovirus, see our recent paper at <https://wellcomeopenresearch.org/articles/10-614>. The package supports standard data frame inputs with reference date, report date, and count columns, as well as the direct use of reporting triangles, and is compatible with 'epinowcast' objects. Alongside an opinionated default workflow, it has a low-level pipe-friendly modular interface, allowing context-specific workflows. It can accommodate a wide spectrum of reporting schedules, including mixed patterns of reference and reporting (daily-weekly, weekly-daily). It also supports sharing delay distributions and uncertainty estimates between strata, as well as custom uncertainty models and delay estimation methods.
How to cite:
Kaitlyn Johnson (2026). baselinenowcast: Baseline Nowcasting for Right-Truncated Epidemiological Data. R package version 0.2.0, https://cran.r-project.org/web/packages/baselinenowcast. Accessed 17 Jul. 2026.
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