We used a matched test-negative, case–control study design to estimate vaccine effectiveness against any SARS-CoV-2 infection and against any severe, critical, or fatal case of Covid-19, from ...

Study Design: This retrospective cohort study of solid organ transplant recipients with access to a transplant case management program used a case-control study design.

The aim of INTERHEART, a case-control study conducted in > 50 countries, was to determine the associations between a wide array of risk factors and AMI within populations defined by ethnicity and ...

SARS-CoV-2 might target lacrimal glands, causing eyelid swelling due to chronic dacryoadenitis after COVID-19 infection.

The authors acknowledged several limitations of their study, including that its observational case-control study design precluded drawing causative conclusions.

We conducted a national, matched, test-negative, case–control study in Qatar from December 23, 2021, through February 21, 2022, to evaluate the effectiveness of vaccination with BNT162b2 (Pfizer ...

The researchers used a matched test-negative, case-control study design to estimate vaccine effectiveness against any SARS-CoV-2 infection, as well as against any severe, critical, or fatal case ...

Eligibility criteria Types of studies We included prospective cohort studies and case–control studies with a baseline measure of PA and a follow-up measure of all-cause dementia, Alzheimer’s disease ...

The primary analysis was based on a retrospective cohort study, while the internal validation sensitivity analysis was based on a case-control study design.

Researchers used a nested case-control study design, analyzing the records of 613 people who died by suicide within a year of being discharged from an inpatient psychiatric facility in England ...