Evidence map›Paper›PMID 39980045›Full record

ArticleBMC research notes2025

Identification and attribution of weekly periodic biases in global epidemiological time series data.

Kit Gallagher, Richard Creswell, David Gavaghan, Ben Lambert

Abstract read
In one paragraph

Article in BMC research notes, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. A renewal-equation approach to estimatingPhilosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2025
    Article
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Kit GallagherDepartment of Computer Science, University of Oxford, 7 Parks Rd, Oxford, OX1 3QG, UK. gallagher@maths.ox.ac.uk.
Richard CreswellDepartment of Computer Science, University of Oxford, 7 Parks Rd, Oxford, OX1 3QG, UK.
David GavaghanDepartment of Computer Science, University of Oxford, 7 Parks Rd, Oxford, OX1 3QG, UK.
Ben LambertCollege of Engineering, Mathematics and Physical Sciences, University of Exeter, North Park Rd, Exeter, EX4 4QF, UK.

Funding

Engineering and Physical Sciences Research Council EP/S024093/1
6 · The paper itself

Abstract

objectiveCOVID-19 data exhibit various biases, not least a significant weekly periodic oscillation observed in case and death data from multiple countries. There has been debate over whether this may be attributed to weekly socialising and working patterns, or is due to underlying biases in the reporting process. We investigate these periodic reporting trends in epidemics of COVID-19 and cholera, and discuss the possible origin of these oscillations.

resultsWe present a systematic, global characterisation of these weekly biases and identify an equivalent bias in the current Haitian cholera outbreak. By comparing published COVID-19 time series to retrospective datasets from the United Kingdom (UK), we demonstrate that the weekly trends observed in the UK may be fully explained by biases in the testing and reporting processes. These conclusions play an important role in forecasting healthcare demand and determining suitable interventions for future infectious disease outbreaks.

Indexed as

CholeraCOVID-19BiasDisease OutbreaksGlobal HealthHaitiHumansRetrospective StudiesSARS-CoV-2United KingdomCholeraCOVID-19Time series dataWeekend effectWeekly oscillations

Identifiers

PMID39980045
PMCPMC11844129

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.