Evidence map›Paper›PMID 33015145›Full record

ArticleERJ open research2020

Magnitude and time-course of excess mortality during COVID-19 outbreak: population-based empirical evidence from highly impacted provinces in northern Italy.

Sara Conti, Pietro Ferrara, Giampiero Mazzaglia, Marco I D'Orso, Roberta Ciampichini, Carla Fornari, Fabiana Madotto, Michele Magoni, Giuseppe Sampietro, Andrea Silenzi and 5 more

Open access · goldAbstract read
In one paragraph

Article in ERJ open research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 2 pooled it
3.3field-weighted citation impact, top 6% of its field
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

26 citing papers in PubMed, 2 syntheses or guidelines pooled it, 44 citations in OpenAlex.

  1. Pooled it
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  8. Azithromycin use and outcomes in patients with COVID-19: an observational real-world study.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2022
    Observational
  9. Article
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  12. Estimation of Excess All-Cause Mortality Due to COVID-19 in Thailand.Tropical medicine and infectious disease · 2022
    Article
  13. Impact of the COVID-19 Pandemic on Total and Cause-Specific Mortality in Pavia, Northern Italy.International journal of environmental research and public health · 2022
    Article
  14. Article
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  16. 3Journal of preventive medicine and hygiene · 2022
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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

15 authors at 5 institutions in 1 country.

Sara ContiCenter for Public Health Research, University of Milano - Bicocca, Monza, Italy.ORCID https://orcid.org/0000-0002-5774-3740
Pietro FerraraCenter for Public Health Research, University of Milano - Bicocca, Monza, Italy.ORCID https://orcid.org/0000-0002-0349-3221
Giampiero MazzagliaCenter for Public Health Research, University of Milano - Bicocca, Monza, Italy.
Marco I D'OrsoCenter for Public Health Research, University of Milano - Bicocca, Monza, Italy.
Roberta CiampichiniHealth Protection Agency of Bergamo (ATS Bergamo), Bergamo, Italy.
Carla FornariCenter for Public Health Research, University of Milano - Bicocca, Monza, Italy.
Fabiana MadottoCenter for Public Health Research, University of Milano - Bicocca, Monza, Italy.
Michele MagoniHealth Protection Agency of Brescia (ATS Brescia), Brescia, Italy.
Giuseppe SampietroHealth Protection Agency of Bergamo (ATS Bergamo), Bergamo, Italy.
Andrea SilenziHealth Protection Agency of Brescia (ATS Brescia), Brescia, Italy.
Claudio V SileoHealth Protection Agency of Brescia (ATS Brescia), Brescia, Italy.
Alberto ZucchiHealth Protection Agency of Bergamo (ATS Bergamo), Bergamo, Italy.
Giancarlo CesanaCenter for Public Health Research, University of Milano - Bicocca, Monza, Italy.
Lamberto ManzoliDept of Medical Sciences, University of Ferrara, Ferrara, Italy.
Lorenzo G MantovaniCenter for Public Health Research, University of Milano - Bicocca, Monza, Italy.
University of Milano-Bicocca · ITUniversity of Bergamo · ITMultiMedica · ITUniversità Cattolica del Sacro Cuore · ITUniversity of Ferrara · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe real impact of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on overall mortality remains uncertain as surveillance reports have attributed a limited number of deaths to novel coronavirus disease 2019 (COVID-19) during the outbreak. The aim of this study was to assess the excess mortality during the COVID-19 outbreak in highly impacted areas of northern Italy.

methodsWe analysed data on deaths that occurred in the first 4 months of 2020 provided by the health protection agencies (HPAs) of Bergamo and Brescia (Lombardy), building a time-series of daily number of deaths and predicting the daily standardised mortality ratio (SMR) and cumulative number of excess deaths through a Poisson generalised additive model of the observed counts in 2020, using 2019 data as a reference.

resultsWe estimated that there were 5740 (95% credible set (CS) 5552-5936) excess deaths in the HPA of Bergamo and 3703 (95% CS 3535-3877) in Brescia, corresponding to a 2.55-fold (95% CS 2.50-2.61) and 1.93 (95% CS 1.89-1.98) increase in the number of deaths. The excess death wave started a few days later in Brescia, but the daily estimated SMR peaked at the end of March in both HPAs, roughly 2 weeks after the introduction of lockdown measures, with significantly higher estimates in Bergamo (9.4, 95% CI 9.1-9.7).

conclusionExcess mortality was significantly higher than that officially attributed to COVID-19, disclosing its hidden burden likely due to indirect effects on the health system. Time-series analyses highlighted the impact of lockdown restrictions, with a lower excess mortality in the HPA where there was a smaller delay between the epidemic outbreak and their enforcement.

Identifiers

PMID33015145
PMCPMC7520169
OpenAlexW3087995489

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.