Bariatric Surgery and COVID-19

Bariatric Surgery Provision in Response to the COVID-19 Pandemic: Retrospective Cohort Study of a National Registry

The National Bariatric Surgical Registry (NBSR) is a prospectively collected database for all patients undergoing elective bariatric surgery in the UK. It was used to identify patients that underwent elective bariatric surgery during the pandemic (one year from 1st April 2020). Characteristics of this group were compared with a pre-pandemic cohort (one year from 1st September 2018).

Study Overview

• Status: Completed
• Conditions: COVID-19; Bariatric Surgery Candidate
• Intervention / Treatment: Other: COVID-19 pandemic

• Study Type: Observational
• Enrollment (Actual): 11545

Contacts and Locations

Study Locations

• United Kingdom
  • London, United Kingdom, W2 1NY
    • Department of Surgery and Cancer, Imperial College London

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Child; Adult; Older Adult
• Accepts Healthy Volunteers: Yes

• Sampling Method: Non-Probability Sample

Study Population

All patients listed on National Bariatric Surgical Registry (NBSR) that underwent elective bariatric surgery during the pandemic (one year from 1st April 2020) or prior to the pandemic (one year from 1st September 2018)

Description

Inclusion Criteria:

All patients listed on National Bariatric Surgical Registry (NBSR) that underwent elective bariatric surgery during the pandemic (one year from 1st April 2020) or prior to the pandemic (one year from 1st September 2018) -

Exclusion Criteria:

- Where a variable was 'not recorded' this point was excluded from analysis. For age, gender, procedure type and provider the records were 100% complete, for BMI at time of surgery there was 5% missing data and for other variables the missing value rate was 2% or lower.

Study Plan

How is the study designed?

Design Details

• Observational Models: Cohort
• Time Perspectives: Retrospective

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
Pre-pandemic; Patients that underwent elective bariatric surgery in a control period prior to the pandemic (one year from 1st September 2018).
Pandemic; Patients that underwent elective bariatric surgery during the pandemic (one year from 1st April 2020)	Other: COVID-19 pandemic; Pandemic group underwent surgery during the COVID-19 pandemic. Pre-pandemic group underwent surgery prior to the pandemic.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Revisions	Number of patients undergoing revisional bariatric surgery	1 year
Private	Number of patients undergoing elective bariatric surgery in the private sector	1 year

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Completed Laparoscopically	Number of cases completed laparoscopically for patients undergoing elective bariatric surgery in the NHS	1 year
Length of Stay	Length of stay for NHS patients undergoing bariatric surgery in days	1 year
Surgical Complications	Number of surgical complications in patients undergoing elective bariatric surgery in the NHS	1 year
Presence of Second Consultant	Presence of second consultant in elective bariatric cases undertaken in the NHS	1 year

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
Private vs NHS	Proportion of patients undergoing elective bariatric surgery in the private sector vs NHS	1 year

Collaborators and Investigators

• Sponsor: Imperial College London
• Collaborators: The Royal College of Surgeons of England

Study record dates

Study Major Dates

• Study Start (Actual): September 1, 2018
• Primary Completion (Actual): April 1, 2021
• Study Completion (Actual): April 1, 2021

Study Registration Dates

• First Submitted: September 7, 2022
• First Submitted That Met QC Criteria: September 7, 2022
• First Posted (Actual): September 8, 2022

Study Record Updates

• Last Update Posted (Estimated): December 1, 2023
• Last Update Submitted That Met QC Criteria: November 30, 2023
• Last Verified: November 1, 2023

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Coronavirus Infections; Coronaviridae Infections; Nidovirales Infections; RNA Virus Infections; Virus Diseases; Infections; Respiratory Tract Infections; Respiratory Tract Diseases; Pneumonia, Viral; Pneumonia; Lung Diseases; COVID-19
• Other Study ID Numbers: 010420C19

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO
• IPD Plan Description: There are restrictions on the availability of data for this study, due to the initial patient consent forms, which only allow the sharing of data for research purposes. Researchers wishing to access an anonymized dataset containing individual participant data can apply to the research data management service at St George's University of London UK (researchdata@sgul.ac.uk), where the data is held in a repository.

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No