Circadian, Weekly and Seasonal Variability of Postoperative Mortality and Morbidity (Zirkadianest)

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Total Enrollment

247506 participants

Study Classification

OBSERVATIONAL

Study Start Date

2006-01-31

Study Completion Date

2014-06-30

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

Mortality is subject to cyclic variability: circadian, weekly, and seasonal. This has been shown for different populations, different diseases and in different countries, but not for surgical patients. Aim of this study is therefore to investigate the association between circadian, weekly, and seasonal effects time of surgery postoperative mortality of patients undergoing surgery and general anesthesia.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Postoperative Mortality and Morbidity

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Observational Model Type

COHORT

Study Time Perspective

RETROSPECTIVE

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

Adult patients

All patients undergoing general anesthesia between January 2006 and December 2013

No interventions assigned to this group

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

All Patients who underwent anesthesia within the study time period.

Exclusion Criteria

none

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

Claudia Spies

Department of Anesthesiology and Intensive Care Medicine CVK/CCM, Charite University, Berlin, Germany

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

Learn about the lead researchers overseeing the trial and their institutional affiliations.

Claudia Spies, MD Prof.

Role: STUDY_DIRECTOR

Charite University, Berlin, Germany

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

Department of Anesthesiology and Intensive Care Medicine Campus Charité Mitte and Campus Virchow-Klinikum, Charité - University Medicine

Berlin, State of Berlin, Germany

Site Status

Countries

Review the countries where the study has at least one active or historical site.

Germany

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

Zirkadianest

Identifier Type: -

Identifier Source: org_study_id