BMJ

Tension pneumothorax—time for a re-think?

Correspondence to: Mr S Leigh-Smith c/o Institute of Naval Medicine, Monckton House, Alverstoke, Gosport, Hampshire PO12 2DL, UK; simonlsukaol.com This review examines the present understanding of ...
BMJ

Simple nomograms to calculate sample size in diagnostic studies

Objectives: To produce an easily understood and accessible tool for use by researchers in diagnostic studies. Diagnostic studies should have sample size calculations performed, but in practice, they ...
BMJ

Utilisation of an emergency medical services pathway into a virtual emergency department and the impact on non-transports and patient safety

Background The establishment of an emergency medical services (EMS) pathway into a virtual emergency service—the Victorian Virtual Emergency Department (VVED)—introduced a video-enabled telehealth ...
BMJ

The relationship between distance to hospital and patient mortality in emergencies: an observational study

Correspondence to: Professor Jon Nicholl Medical Care Research Unit, University of Sheffield, Regent Court, 30 Regent Street, Sheffield, S1 4DA, UK; j.nicholl{at}sheffield.ac.uk Objectives: ...
BMJ

Evaluation of the impact of artificial intelligence-assisted image interpretation on the diagnostic performance of clinicians in identifying pneumothoraces on plain chest X-ray ...

Background Artificial intelligence (AI)-assisted image interpretation is a fast-developing area of clinical innovation. Most research to date has focused on the performance of AI-assisted algorithms ...
BMJ

An introduction to power and sample size estimation

Correspondence to: Dr S R Jones, Emergency Department, Manchester Royal Infirmary, Oxford Road, Manchester M13 9WL, UK; steve.r.jones{at}bigfoot.com ...
BMJ

Non-sterile gloves and dressing versus sterile gloves, dressings and drapes for suturing of traumatic wounds in the emergency department: a non-inferiority multicentre ...

Background Patients with traumatic wounds frequently present to the ED. Literature on whether to treat these wounds sterile or non-sterile is sparse. Non-sterile treatment has the advantage of saving ...
BMJ

Observational research methods. Research design II: cohort, cross sectional, and case-control studies

Cohort, cross sectional, and case-control studies are collectively referred to as observational studies. Often these studies are the only practicable method of studying various problems, for example, ...
BMJ

Dizziness and yield of emergency head CT scan: Is it cost effective?

Correspondence to: Mohammad Wasay MD Department of Neurology, The Aga Khan university, Stadium Road, Karachi 74800, Pakistan; mohammad.wasayaku.edu If you wish to reuse any or all of this article ...
BMJ

Patient satisfaction in emergency medicine

Correspondence to: Dr J Benger Academic Department of Emergency Care, Emergency Department, Bristol Royal Infirmary, Bristol BS2 8HW, UK; Jonathan.Bengerubht.swest.nhs.uk A systematic review was ...
BMJ

Population, Intervention, Comparison, Outcomes and Study (PICOS) design as a framework to formulate eligibility criteria in systematic reviews

Dear editor, We read with great interest the review entitled ‘Paracetamol vs other analgesia in adult patients with minor musculoskeletal injuries: a systematic review’,1 published in the Emergency ...
BMJ

Injuries associated with airbag deployment

Motor vehicle crashes are a leading cause of morbidity and mortality in the United Kingdom. Airbags drastically reduce both morbidity and mortality from crashes, but with the increased use of airbags ...