Studying only admissions is a source of potential bias

doi:10.1136/bmj.311.7003.509

From trainee to consultant, BMJ Group offers doctors around the world tailored information, special events, learning resources and recruitment services at every step along their career path.

... by doctors, for doctors, for patients
We are open for entries!

Online learning

BMJ Learning

High-quality CME / CPD for doctors and other healthcare professionals. BMJ Learning features hundreds of accredited, peer-reviewed learning modules in text, video, and audio formats. Find out more

Courses and Qualifications

BMJ Masterclasses

BMJ Masterclasses, led by experts, help clinicians to use the latest evidence and recent guidelines in practice and meet their CPD/CME requirements. Find out more

Exam Preparation

The leading provider of online exam preparation, helping over 167,000 healthcare professionals to pass their exams. Find out more

onExamination

Search all BMJ comment articles:

From

Limit by

Access to the full text of this article requires a subscription or payment. Please log in or subscribe below.

Clive Weston,
Peter Donnelly

Senior lecturer Department of Cardiology, Pinderfields Hospital, Wakefield WF1 4DG
Senior lecturer Centre for Applied Public Health Medicine, University of Wales College of Medicine, Cardiff CF1 3NW

EDITOR,--U M Guly and colleagues state that their study, which claims to show that “paramedics and technicians are equally successful at managing cardiac arrest outside hospital,” does not “diminish the role of paramedics.”1 Yet the paragraph about their paper in This week in BMJ concludes that such patients “are best treated” by technicians and calls into question the requirement of having a paramedic in …