300,000 surgery patients under the microscope: did COVID change outcomes?
NCT ID NCT04525716
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at 300,000 surgical patients in Stockholm to see how the COVID-19 pandemic impacted their recovery. Researchers will track deaths, complications, and how long people stayed in the hospital. The goal is to understand the pandemic's effects on surgical care, not to test a new treatment.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 300,000 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jan 2020
- Expected to finish
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Dec 2029
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Patients that undergo surgical treatment in the Stockholm Region during the study period
- Ages
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Children (under 18), adults (18 to 64) and older adults (65 and over)
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Patients that undergo surgical treatment in the Stockholm Region during the study period Exclusion Criteria: \-
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Genom att skicka in godkänner du våra Användarvillkor
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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All acute care hospitals in Region Stockholm
RECRUITINGStockholm, Sweden
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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