SurgeryNCT06792578
Surgical Start Time and Prognosis
An observational study of Surgery and Non Cardiac Surgery, run by Asan Medical Center at 1 site in South Korea.
Trial summary
Surgical start times significantly impacted mortality, morbidity, and resource utilization, particularly in high-risk patients. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Surgery, Non Cardiac Surgery
- What is being tested?
- Surgical Start Time
- Type of treatment
- Surgery or procedure
- How many people
- 291,051 participants
- Where
- 1 siteSouth Korea
- Study dates
- 3 Jun 2022to 20 Jan 2025
- How long will I take part?
- 5 Years
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: The study population includes adult patients aged 18 years or older who underwent elective non-cardiac surgeries at a tertiary hospital. Patients with emergency surgeries, incomplete data on surgical start times, or missing follow-up information were excluded from the analysis. The study focuses on evaluating the impact of surgical start times (morning, afternoon, and nighttime) on postoperative outcomes, including mortality, complications, and ICU admission.
Who may be able to join
- Patients aged 18 years or older
- Patients who underwent non-cardiac surgery
Who cannot join
- Emergency surgeries
- Cadaver surgeries
- Transplantation surgeries
- Patients with incomplete or missing data, such as follow-up information, operation start times, or laboratory values
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Association Between Surgical Start Time and Postoperative Mortality, Morbidity, and Healthcare Utilization in Elective Non-cardiac Surgeries: a Retrospective, Single-center Study Using Propensity Score Matching
Surgical start times significantly impacted mortality, morbidity, and resource utilization, particularly in high-risk patients.
- Conditions
- Surgery, Non Cardiac Surgery
- Being tested
- Surgical Start Time
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Surgical Start TimeProcedure or surgery
This intervention focuses on the retrospective analysis of the association between surgical start times (morning, afternoon, and nighttime) and postoperative outcomes in non-cardiac surgeries. The study evaluates how the timing of surgery impacts mortality, complications, transfusion rates, and ICU admissions in a tertiary hospital setting
What is being measured
The primary outcome is the main question the study is designed to answer.
30-Day Postoperative Mortality
"The primary outcome measure is the incidence of 30-day postoperative mortality in patients undergoing non-cardiac surgeries. Mortality is defined as death occurring within 30 days following the surgery. The study aims to evaluate the association between surgical start times (morning, afternoon, and nighttime) and the risk of mortality
Measured: 30 days post-surgery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted24 Jan 2025
- Study start3 Jun 2022
- Primary completion30 Dec 2024
- Study completion20 Jan 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for SurgeryStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Other
- Enrolment
- 291,051 participants (actual)
- Target duration
- 5 Years
Sponsor and investigators
- Lead sponsor
- Asan Medical Center
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ji-Hoon Sim, Asan Medical Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06792578
- Sponsor's protocol ID
- AMC 2022-0755
- Status last verified
- Jun 2022
- First submitted
- 20 Jan 2025
- Last updated
- 27 Jan 2025
- Results posted
- No
- Data monitoring committee
- No
- Individual data sharing
- No: The dataset used and/or analyzed during the current study is available from the corresponding author upon reasonable request.
Study at a glance
From the registry record, last updated by the sponsor on 27 Jan 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Association Between Surgical Start Time and Postoperative Mortality, Morbidity, and Healthcare Utilization in Elective Non-cardiac Surgeries: a Retrospective, Single-center Study Using Propensity Score Matching
- ClinicalTrials.gov ID
- NCT06792578
- Acronym / sponsor ID
- AMC 2022-0755
- Conditions
- Surgery, Non Cardiac Surgery
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 291,051 participants (actual)
- Lead sponsor
- Asan Medical CenterUniversity, hospital or other
- Study start
- 3 Jun 2022 (actual)
- Primary completion
- 30 Dec 2024 (actual)
- Study completion
- 20 Jan 2025 (actual)
- First posted
- 24 Jan 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Surgical start times significantly impacted mortality, morbidity, and resource utilization, particularly in high-risk patients.
Study design
- Observational model
- Cohort
- Time perspective
- Other
- Target follow-up
- 5 Years
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- The study population includes adult patients aged 18 years or older who underwent elective non-cardiac surgeries at a tertiary hospital. Patients with emergency surgeries, incomplete data on surgical start times, or missing follow-up information were excluded from the analysis. The study focuses on evaluating the impact of surgical start times (morning, afternoon, and nighttime) on postoperative outcomes, including mortality, complications, and ICU admission.
Key inclusion criteria (2 listed)
- Patients aged 18 years or older
- Patients who underwent non-cardiac surgery
Key exclusion criteria (4 listed)
- Emergency surgeries
- Cadaver surgeries
- Transplantation surgeries
- Patients with incomplete or missing data, such as follow-up information, operation start times, or laboratory values
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Surgical Start TimeThis intervention focuses on the retrospective analysis of the association between surgical start times (morning, afternoon, and nighttime) and postoperative outcomes in non-cardiac surgeries. The study evaluates how the timing of surgery impacts mortality, complications, transfusion rates, and ICU admissions in a tertiary hospital setting | Procedure or surgery | – |
Primary outcome
30-Day Postoperative Mortality
Time frame: 30 days post-surgery
"The primary outcome measure is the incidence of 30-day postoperative mortality in patients undergoing non-cardiac surgeries. Mortality is defined as death occurring within 30 days following the surgery. The study aims to evaluate the association between surgical start times (morning, afternoon, and nighttime) and the risk of mortality
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 27 Jan 2025.
- Individual participant dataSharing planned: No. The dataset used and/or analyzed during the current study is available from the corresponding author upon reasonable request.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Surgery and Non Cardiac Surgery, run by Asan Medical Center at 1 site in South Korea.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 27 Jan 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in South Korea. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
30-Day Postoperative Mortality (time frame: 30 days post-surgery). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Jan 2025.