Evidence map›Paper›PMID 34126098›Full record

ArticleThe American journal of medicine2021

Population Decline in COPD Admissions During the COVID-19 Pandemic Associated with Lower Burden of Community Respiratory Viral Infections.

Jennifer Y So, Nathan N O'Hara, Blaine Kenaa, John G Williams, Christopher L deBorja, Julia F Slejko, Zafar Zafari, Michael Sokolow, Paul Zimand, Meagan Deming and 3 more

Open access · bronzeAbstract read
In one paragraph

Article in The American journal of medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
6.0field-weighted citation impact, top 3% 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

33 citing papers in PubMed, 51 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. The Humanistic and Economic Burden of COPD Patients in Urban China: A Propensity Score Matching Study.International journal of chronic obstructive pulmonary disease · 2025
    Article
  9. 20-year trends in excess costs of COPD.The European respiratory journal · 2025
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. COPD Exacerbations Before and During COVID-19 in France, Germany, Italy, the UK and the US.International journal of chronic obstructive pulmonary disease · 2024
    Article
  20. 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

13 authors at 2 institutions in 1 country.

Jennifer Y SoDivision of Pulmonary and Critical Care, University of Maryland School of Medicine, Baltimore.
Nathan N O'HaraDepartment of Orthopaedics, University of Maryland School of Medicine, Baltimore.
Blaine KenaaDivision of Pulmonary and Critical Care, University of Maryland School of Medicine, Baltimore.
John G WilliamsDivision of Pulmonary and Critical Care, University of Maryland School of Medicine, Baltimore.
Christopher L deBorjaDepartment of Medicine, University of Maryland Baltimore Washington Medical Center, Glen Burnie, Md.
Julia F SlejkoDepartment of Pharmaceutical Health Services Research, University of Maryland School of Pharmacy, Baltimore.
Zafar ZafariDepartment of Pharmaceutical Health Services Research, University of Maryland School of Pharmacy, Baltimore.
Michael SokolowQuality Management Department, University of Maryland Medical System, Baltimore.
Paul ZimandQuality Management Department, University of Maryland Medical System, Baltimore.
Meagan DemingDivision of Infectious Disease, University of Maryland School of Medicine, Baltimore.
Jason MarxDepartment of Medicine, University of Maryland St. Joseph's Medical Center, Towson.
Andrew N PollakDepartment of Orthopaedics, University of Maryland School of Medicine, Baltimore.
Robert M ReedDivision of Pulmonary and Critical Care, University of Maryland School of Medicine, Baltimore. Electronic address: rreed@som.umaryland.edu.
University of Maryland, Baltimore · USSt. Joseph Medical Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe Coronavirus disease 2019 (COVID-19) pandemic has led to widespread implementation of public health measures, such as stay-at-home orders, social distancing, and masking mandates. In addition to decreasing spread of severe acute respiratory syndrome coronavirus 2, these measures also impact the transmission of seasonal viral pathogens, which are common triggers of chronic obstructive pulmonary disease (COPD) exacerbations. Whether reduced viral prevalence mediates reduction in COPD exacerbation rates is unknown.

methodsWe performed retrospective analysis of data from a large, multicenter health care system to assess admission trends associated with community viral prevalence and with initiation of COVID-19 pandemic control measures. We applied difference-in-differences analysis to compare season-matched weekly frequency of hospital admissions for COPD prior to and after implementation of public health measures for COVID-19. Community viral prevalence was estimated using regional Centers for Disease Control and Prevention test positivity data and correlated to COPD admissions.

resultsData involving 4422 COPD admissions demonstrated a season-matched 53% decline in COPD admissions during the COVID-19 pandemic, which correlated to community viral burden (r = 0.73; 95% confidence interval, 0.67-0.78) and represented a 36% greater decline over admission frequencies observed in other medical conditions less affected by respiratory viral infections (incidence rate ratio 0.64; 95% confidence interval, 0.57-0.71, P < .001). The post-COVID-19 decline in COPD admissions was most pronounced in patients with fewer comorbidities and without recurrent admissions.

conclusionThe implementation of public health measures during the COVID-19 pandemic was associated with decreased COPD admissions. These changes are plausibly explained by reduced prevalence of seasonal respiratory viruses.

Indexed as

Communicable Disease ControlCOVID-19FemaleHospitalizationHumansMaleMiddle AgedPandemicsPrevalencePulmonary Disease, Chronic ObstructiveRespiratory Tract DiseasesRetrospective StudiesSARS-CoV-2SeasonsSymptom Flare UpCommunity viral infectionsCOPDCOVIDExacerbations

Identifiers

PMID34126098
PMCPMC8196237
OpenAlexW3171025348

What OpenQuestion holds

Textmetadata
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.