Cited by 41COVID-19 and healthcare impactsCOVID-19 Clinical Research StudiesCardiac, Anesthesia and Surgical Outcomes

Postoperative in-hospital morbidity and mortality of patients with COVID-19 infection compared with patients without COVID-19 infection

Open access

Abstract

This cohort study uses the Vizient Clinical Data Base to compare the postoperative in-hospital morbidity and mortality of surgical patients with COVID-19 infection with patients without COVID-19 infection.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1001/jamanetworkopen.2021.5697

Cites

6 of 6 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Haffner et al. found that COVID-19 is an independent risk factor for increased perioperative mortality among surgical patients.

    “A study by Haffner et al. discovered that COVID-19 is an independent risk factor for increased perioperative mortality among surgical patients [16].”

    From Outcomes of Acute Mesenteric Ischemia in Patients With COVID-19: A Nationwide Database Study (2023) · cites this paper as [16]

    The Discussion reports that the study’s findings suggest COVID-19 infection positivity was an independent risk factor for increased perioperative mortality among surgical patients. The citing sentence presents that observational finding as a discovery of fact, omitting the source’s uncertainty. (LLM, conf=0.82)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Haffner, M. R., Le, H. V., Saiz, A. M., Han, G., Fine, J., Wolinsky, P., & Klineberg, E. O.
Affiliations
University of California, Davis (US)
Corresponding author
Haffner, Max R.
Venue
JAMA Network Open
Published
2021-04-12
Volume
4
Issue
4
Pages
e215697
ISSN
2574-3805 (ISSN-L)
OpenAlex
W3154479301
Cited by
41
References
6
Citations by year
2025: 1 · 2024: 8 · 2023: 10 · 2022: 17 · 2021: 4
FWCI
3.55
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • JAMA Network Open (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • Stryker
  • National Institutes of Health (UL1TR001860)
  • National Center for Advancing Translational Sciences (TR001860)
Topics
  • Health Sciences › Medicine › Oncology › COVID-19 and healthcare impacts
  • Health Sciences › Medicine › Infectious Diseases › COVID-19 Clinical Research Studies
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac, Anesthesia and Surgical Outcomes
Keywords
COVID-19 pandemic, postoperative morbidity, postoperative mortality, surgical patients, hospitalization outcomes
MeSH terms
COVID-19, Humans, Postoperative Complications, Retrospective Studies, Risk Factors, Cohort Studies, Hospital Mortality

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review