Ingeborg H. Elgersma

Oslo, Norway

Last Updated: 09/26/2026

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Found 20 publications

Norwegian Register-Based Studies on Sports & Health (NorSport): Study protocol.

Norwegian Register-Based Studies on Sports & Health (NorSport): Study protocol.

Journal: Scandinavian journal of public health

Published: July 02, 2026

The Norwegian Sports Membership Database: Coverage, biases and potential.

The Norwegian Sports Membership Database: Coverage, biases and potential.

Journal: Scandinavian journal of public health

Published: June 08, 2026

Classroom air purifiers for reducing school absence: study protocol for a pragmatic, cluster-randomised, parallel, two-arm, group sequential superiority trial.

Classroom air purifiers for reducing school absence: study protocol for a pragmatic, cluster-randomised, parallel, two-arm, group sequential superiority trial.

Journal: BMJ open

Published: December 25, 2025

Air purifiers in classrooms for infection control: a pilot study including a randomized multiple crossover trial to evaluate effectiveness in reducing particulate matter.

Air purifiers in classrooms for infection control: a pilot study including a randomized multiple crossover trial to evaluate effectiveness in reducing particulate matter.

Journal: Trials

Published: December 02, 2024

Informed decisions about public health and social measures.

Informed decisions about public health and social measures.

Journal: Health research policy and systems

Published: October 17, 2024

Effect of wearing glasses for prevention of SARS-CoV-2 on visits to health care providers-additional results from a randomized controlled trial.

Effect of wearing glasses for prevention of SARS-CoV-2 on visits to health care providers-additional results from a randomized controlled trial.

Journal: Trials

Published: September 03, 2024

Why were so few randomized trials of public health and social measures conducted during the COVID-19 pandemic? The Norwegian experience.

Why were so few randomized trials of public health and social measures conducted during the COVID-19 pandemic? The Norwegian experience.

Journal: Trials

Published: July 29, 2024

Personal protective effect of wearing surgical face masks in public spaces on self-reported respiratory symptoms in adults: pragmatic randomised superiority trial.

Personal protective effect of wearing surgical face masks in public spaces on self-reported respiratory symptoms in adults: pragmatic randomised superiority trial.

Journal: BMJ (Clinical research ed.)

Published: July 24, 2024

Strengthening research preparedness for crises: lessons from Norwegian government agencies in using randomized trials and quasi-experimental methods to evaluate public policy interventions.

Strengthening research preparedness for crises: lessons from Norwegian government agencies in using randomized trials and quasi-experimental methods to evaluate public policy interventions.

Journal: Health research policy and systems

Published: June 01, 2024

Association between face mask use and risk of SARS-CoV-2 infection: Cross-sectional study.

Association between face mask use and risk of SARS-CoV-2 infection: Cross-sectional study.

Journal: Epidemiology and infection

Published: November 12, 2023

GP phone calls to improve COVID-19 vaccine uptake among patients at increased risk of severe COVID-19: a randomised trial.

GP phone calls to improve COVID-19 vaccine uptake among patients at increased risk of severe COVID-19: a randomised trial.

Journal: BJGP open

Published: December 06, 2022

Effect of Wearing Glasses on Risk of Infection With SARS-CoV-2 in the Community: A Randomized Clinical Trial.

Effect of Wearing Glasses on Risk of Infection With SARS-CoV-2 in the Community: A Randomized Clinical Trial.

Journal: JAMA network open

Published: December 01, 2022

Showing 1-12 of 20

Last Updated: 09/26/2026