In December 2005, an article of massive importance was published in the British Medical Journal. Doctors counted up the number of children being admitted to A&E with musculoskeletal injuries (breaks and sprains — many of which would have been caused by bicycle-related incidents) on summer weekends and discovered a startling […]
This is just a crude brain dump of a post that comes after the serious series — posts one, two, three, four, five, six, seven and eight. Sorry, I just can’t get over these extraordinary pages on the BMA’s website. Here’s a very quick run through some of the Bad […]
In 1958, the UK licensed a drug for treating morning sickness. It worked very well. The studies all showed that pregnant women suffering from morning sickness received much relief with the drug. Three years later it was withdrawn, but not before 2,000 babies were born with birth defects — 20,000 […]
The reason I pick up the bicycle helmet theme again this week is that the BMJ is running a sidebar poll of their readers (or, more accurately, of cycling tweeters and recipients of Robert Davis’s emails ;-)), asking whether it should be compulsory for adult cyclists to wear helmets. The […]
Some months ago I left a series on bicycle helmets hanging while I got distracted with other things. We had looked at what the best evidence for the efficacy of helmets in preventing injury in the event of a crash is, and some of the reasons why we should be […]
The doctor’s representatives BMA and the “Road Safety” charity Brake both say “yes”. The Automobile Association and the cyclists say “no”. They can’t both be right. Unless the answer is “yes and no”. Find out how that could be so, at At War With The Motorist…
A good review of a medical intervention starts by explaining the population being studied. The Cochrane review of helmets for preventing head injuries in bicyclists explains that its population is the set of bicyclists who sustained an injury that was sufficiently major to make them go to the ER for […]
In rare events like bicyclist injuries, odds ratios can be used as an approximation of relative risk: that is, how much a medical intervention changes the risk of a specific outcome. An odds ratio of 0.3 is interpreted as a 70% reduction in risk of head injury when wearing a […]
According to the Cochrane Collaboration — the source that most doctors will go to for their summary of the evidence — it is five studies from the 1980s and 1990s. Continue reading at At War With The Motorist…
I know a lot of you find the whole helmets thing — whether they “help” or “work” or not — tiresome and unimportant. Well tough. Bicycle helmets are a medical intervention — a special kind of medical intervention — and whether or not medical interventions work and are worthwhile is […]
From At War With The Motorist today… From the World Health Organisation’s Multi-Sectoral Forum on Road Safety in China (March 2008), on driving in a country where over a quarter of a million die on the roads each year: Both lack of awareness to risks and inexperience means that people […]