Trends in serious head injuries among cyclists in England: analysis of routinely collected data

doi:10.1136/bmj.321.7268.1055

BMJ 2000;321:1055 ( 28 October )

Papers

Trends in serious head injuries among cyclists in England: analysis of routinely collected data

Adrian Cook, statistician, Aziz Sheikh, NHS R&D training fellow.

Department of Primary Health Care and General Practice, Imperial College School of Medicine, London W2 1PG

Correspondence to: A Cook a.d.cook@ic.ac.uk

The first 150 words of the full text of this article appear below.

As the health and environmental benefits of cycling have become better appreciated, successive governments in the United Kingdomhave encouraged cycle use. Cyclists, however, face considerablerisk of injury, of which head injuries most commonly result inserious adverse outcomes. Despite evidence from case-control andtime trend studies, ¹ ² questions remain about the effectivenessof helmets, particularly for adults. We examined trends in emergencyadmissions for cycle injuries to English hospitals between 1991and 1995, during which time the wearing of helmets increased (ResearchInternational Ltd, personal communication).³

Methods and results

All data on admissions to NHS hospitals are entered into the hospital episode statistics database. We studied the data forthe period 1 April 1991 to 31 March 1995, at which time diagnoseswere classified according to ICD-9 (international classificationof diseases, ninth revision), and extracted all records concerningcyclists, whether their injuries resulted from bicycle accidentsor motor vehicle accidents (codes E8261, E810-E825 fourth digit=6).From information . . . [Full text of this article]

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Rapid Responses:

Read all Rapid Responses

Alternative explanation for the trend in head injuries: Conor Linstead
bmj.com, 28 Oct 2000 [Full text]
more helmet nonsense: Douglas Salmon
bmj.com, 28 Oct 2000 [Full text]
Inadequate Control for Confounding Factors: Avery Burdett
bmj.com, 29 Oct 2000 [Full text]
Helmets? Make drivers wear them.: Colin Guthrie
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Perception over reality: Piers Simey
bmj.com, 30 Oct 2000 [Full text]
Re: Helmets? Make drivers wear them.: Aedan McGhie
bmj.com, 31 Oct 2000 [Full text]
A BALANCE OF RISKS: William Sellwood
bmj.com, 31 Oct 2000 [Full text]
Re: A BALANCE OF RISKS-dont fall off: G H Hall
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Why focus on helmets?: Glenn Stewart
bmj.com, 1 Nov 2000 [Full text]
A Lack of Respect: Tony Whiffen
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Protection difficult to prove: Mike Clark
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A failed analysis: Richard Keatinge
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Curate's egg: Simon Baddeley
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Bicycle helmets again!: Anthony Campbell
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Dangers of Cycling: Lee Jeys
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Re: Dangers of Cycling: Ian Nesbitt
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Cycle helmets: Mayer Hillman
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scottish data shows fall in head injury: Adam Redpath
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