Evidence map›Paper›PMID 33520914›Full record

ArticleFrontiers in public health2020

Reduced Rate of Inpatient Hospital Admissions in 18 German University Hospitals During the COVID-19 Lockdown.

Lorenz A Kapsner, Marvin O Kampf, Susanne A Seuchter, Julian Gruendner, Christian Gulden, Sebastian Mate, Jonathan M Mang, Christina Schüttler, Noemi Deppenwiese, Linda Krause and 20 more

Open access · goldAbstract readComparative Study
In one paragraph

Article in Frontiers in public health, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed, 1 pooled it
8.6field-weighted citation impact, top 1% 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

70 citing papers in PubMed, 1 synthesis or guideline pooled it, 118 citations in OpenAlex.

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  13. Drivers and recent trends of hospitalisation costs related to acute pulmonary embolism.Clinical research in cardiology : official journal of the German Cardiac Society · 2025
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10 more citing papers are in PubMed but not listed here.

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

30 authors at 11 institutions in 1 country.

Lorenz A KapsnerMedical Center for Information and Communication Technology, Universitätsklinikum Erlangen, Erlangen, Germany.
Marvin O KampfMedical Center for Information and Communication Technology, Universitätsklinikum Erlangen, Erlangen, Germany.
Susanne A SeuchterMedical Center for Information and Communication Technology, Universitätsklinikum Erlangen, Erlangen, Germany.
Julian GruendnerChair of Medical Informatics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany.
Christian GuldenChair of Medical Informatics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany.
Sebastian MateMedical Center for Information and Communication Technology, Universitätsklinikum Erlangen, Erlangen, Germany.
Jonathan M MangMedical Center for Information and Communication Technology, Universitätsklinikum Erlangen, Erlangen, Germany.
Christina SchüttlerChair of Medical Informatics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany.
Noemi DeppenwieseChair of Medical Informatics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany.
Linda KrauseInstitute of Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Daniela ZöllerInstitute of Medical Biometry and Statistics, Medical Faculty and Medical Center, University of Freiburg, Freiburg, Germany.
Julien BaligInstitute of Medical Systems Biology, Ulm University, Ulm, Germany.
Timo FuchsDepartment of Nuclear Medicine, University Hospital Regensburg, Regensburg, Germany.
Patrick FischerInstitute of Medical Informatics, Faculty of Medicine, Justus-Liebig-University, Gießen, Germany.
Christian HaverkampInstitute of Digitalisation in Medicine, Medical Faculty and Medical Center, University of Freiburg, Freiburg, Germany.
Martin HolderriedDepartment of Medical Development and Quality Management, University Hospital Tübingen, Tübingen, Germany.
Gerhard MayerInstitute of Medical Systems Biology, Ulm University, Ulm, Germany.
Holger StenzhornSaarland University Medical Center, Institute for Medical Biometry, Epidemiology and Medical Informatics, Homburg, Germany.
Ana StolnicuInstitute of Medical Systems Biology, Ulm University, Ulm, Germany.
Michael StorckInstitute of Medical Informatics, University of Münster, Münster, Germany.
Holger StorfMedical Informatics Group, Universitätsklinikum Frankfurt, Frankfurt, Germany.
Jochen ZohnerInstitute of Medical Informatics, Faculty of Medicine, Justus-Liebig-University, Gießen, Germany.
Oliver KohlbacherInstitute for Translational Bioinformatics, University Hospital Tübingen, Tübingen, Germany.
Adam StrzelczykEpilepsy Center Frankfurt Rhine-Main, Center of Neurology and Neurosurgery, Goethe University Frankfurt, Frankfurt, Germany.
Jürgen SchüttlerDepartment of Anesthesiology, University Hospital Erlangen, Erlangen, Germany.
Till AckerInstitute of Neuropathology, Justus-Liebig-University, Gießen, Germany.
Martin BoekerInstitute of Medical Biometry and Statistics, Medical Faculty and Medical Center, University of Freiburg, Freiburg, Germany.
Udo X KaisersUlm University Medical Center, Ulm, Germany.
Hans A KestlerInstitute of Medical Systems Biology, Ulm University, Ulm, Germany.
Hans-Ulrich ProkoschChair of Medical Informatics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany.
Friedrich-Alexander-Universität Erlangen-Nürnberg · DEUniversitätsklinikum Erlangen · DEUniversität Ulm · DEUniversity of Freiburg · DEUniversity of Giessen · DEGoethe University Frankfurt · DESaarland University · DEUniversität Hamburg · DEUniversity Hospital Regensburg · DEUniversity of Münster · DEUniversity of Tübingen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The COVID-19 pandemic has caused strains on health systems worldwide disrupting routine hospital services for all non-COVID patients. Within this retrospective study, we analyzed inpatient hospital admissions across 18 German university hospitals during the 2020 lockdown period compared to 2018. Patients admitted to hospital between January 1 and May 31, 2020 and the corresponding periods in 2018 and 2019 were included in this study. Data derived from electronic health records were collected and analyzed using the data integration center infrastructure implemented in the university hospitals that are part of the four consortia funded by the German Medical Informatics Initiative. Admissions were grouped and counted by ICD 10 chapters and specific reasons for treatment at each site. Pooled aggregated data were centrally analyzed with descriptive statistics to compare absolute and relative differences between time periods of different years. The results illustrate how care process adoptions depended on the COVID-19 epidemiological situation and the criticality of the disease. Overall inpatient hospital admissions decreased by 35% in weeks 1 to 4 and by 30.3% in weeks 5 to 8 after the lockdown announcement compared to 2018. Even hospital admissions for critical care conditions such as malignant cancer treatments were reduced. We also noted a high reduction of emergency admissions such as myocardial infarction (38.7%), whereas the reduction in stroke admissions was smaller (19.6%). In contrast, we observed a considerable reduction in admissions for non-critical clinical situations, such as hysterectomies for benign tumors (78.8%) and hip replacements due to arthrosis (82.4%). In summary, our study shows that the university hospital admission rates in Germany were substantially reduced following the national COVID-19 lockdown. These included critical care or emergency conditions in which deferral is expected to impair clinical outcomes. Future studies are needed to delineate how appropriate medical care of critically ill patients can be maintained during a pandemic.

Indexed as

COVID-19Emergency Service, HospitalForecastingGermanyHospitalizationHospitals, UniversityHumansPandemicsPatient AdmissionQuarantineRetrospective StudiesSARS-CoV-2COVID-19Germanyhealthcare systemsinpatient hospital admissionslockdownmedical informatics initiativepandemicuniversity hospitals

Identifiers

PMID33520914
PMCPMC7838458
OpenAlexW3121118501

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.