BMJ

When I use a word . . . . Too much healthcare—observational studies

Observational studies generally provide less reliable evidence than well designed randomised trials and systematic reviews and meta-analyses of such trials. Their results can be affected by ...
University of Bristol

Introduction to observational studies

On watching this video students should be able to: List different types of observational study. Discuss the hierarchy of evidence tool. Explain why an observational study can generally only be used to ...
Frontiers

Methodological biases in observational hospital studies of COVID-19 treatment effectiveness: pitfalls and potential

Introduction: This study aims to discuss and assess the impact of three prevalent methodological biases: competing risks, immortal-time bias, and confounding bias in real-world observational studies ...
BMJ

Study protocol for a Prospective Observational study of Safety Threats and Adverse events in Trauma (PrO-STAT): a pilot study at a level-1 trauma centre in Canada

Introduction Traumatic injuries are a significant public health concern globally, resulting in substantial mortality, hospitalisation and healthcare burden. Despite the establishment of specialised ...
Frontiers

A multi-institute, follow-up, observational study measuring nursing students’ adherence to infection prevention and control protocols in Saudi Arabia

1 Department of Nursing, Al-Zaytoonah University of Jordan, Amman, Jordan 2 Department of Nursing, Al-Balqa Applied University, Al-Salt, Jordan Background: Nursing students learn principles of ...