Featured Research

from universities, journals, and other organizations

One In Three Fatal Bicycle Accidents Linked To Alcohol

Date:
February 23, 2001
Source:
Johns Hopkins Medical Institutions
Summary:
Drinking alcohol and bicycling don't mix well, say Johns Hopkins researchers, whose study of 466 Maryland bicyclists found that a third of fatally injured riders had elevated blood alcohol levels at the time of their accident.

Drinking alcohol and bicycling don't mix well, say Johns Hopkins researchers, whose study of 466 Maryland bicyclists found that a third of fatally injured riders had elevated blood alcohol levels at the time of their accident. In addition, a blood alcohol concentration of 0.08 grams per deciliter – the legal level of drunkenness in most states – was found to increase the rider's risk of fatal or serious injury by 2,000 percent.

Related Articles


The report, in the Feb. 21 issue of the Journal of the American Medical Association, also indicates that helmet wearing declines with drinking. Researchers studied the records of 124 injured bicyclists obtained from the Office of the Chief Medical Examiner of Maryland and the trauma registry of the University of Maryland Medical Center. They also visited each accident site the same month, date and time that the biker was injured and tested 342 passing bicyclists for breath alcohol.

By comparing the alcohol levels in the two groups, researchers estimated that blood alcohol concentrations (BAC) of 0.02 g/dL and 0.08 g/dL are associated, respectively, with a six-fold and 20-fold increased risk of fatal or serious bicycling injury. On average, one drink can lead to a BAC of 0.02 g/dL, while four to five drinks can lead to a BAC of 0.08 g/dL.

Only 5 percent of the injured who had been drinking wore helmets. Thirty percent of the injured bicyclists who had elevated blood alcohol levels also had a history of DWI (driving while intoxicated) citations; some probably used bicycles as a form of transportation because their driver's licenses had been suspended, the authors said.

Alcohol may play an even greater role than indicated by this study, the researchers said, since the group did not look at bicycle injuries occurring at night, when 56 percent of fatal bicycling injuries and 32 percent of serious bicycling injuries occur.

"Riding a bike requires a higher level of psychomotor skills and physical coordination than driving a car, so alcohol has an even stronger effect on bicyclists than drivers," says Guohua Li, M.D., Dr.P.H., associate professor of emergency medicine and lead author of the study. "It's a double jeopardy. Those who ride under the influence are most in need of protection, yet in our study, they were least likely to wear helmets."

An alarming trend, researchers note, is that while the number of fatal bicycle accidents in children has decreased by 70 percent since 1975, it has increased in adults by about 65 percent during the same time period.

The helmet laws that worked well for children should be extended to adult bicyclists, says Susan P. Baker, M.P.H., another author of the study and professor of health policy and management at Hopkins' School of Public Health.

"We are especially concerned because helmet laws do not cover adults, who have the highest death rates, are the most likely to have been drinking, and are the least likely to wear helmets," Baker says. "Alcohol abuse and bicycling is an increasing public health problem that warrants more enforcement."

The study was funded by grants from the National Institutes of Health and the Centers for Disease Control and Prevention. The other authors were John E. Smialek, M.D., of the Office of the Chief Medical Examiner of Maryland; and Carl A. Soderstrom, M.D., of the University of Maryland Medical Center in Baltimore.

Related Web sites:

Johns Hopkins University Department of Emergency Medicine:http://www.acenet.jhmi.edu/emerg/

Johns Hopkins University School of Public Healthhttp://www.jhsph.edu


Story Source:

The above story is based on materials provided by Johns Hopkins Medical Institutions. Note: Materials may be edited for content and length.


Cite This Page:

Johns Hopkins Medical Institutions. "One In Three Fatal Bicycle Accidents Linked To Alcohol." ScienceDaily. ScienceDaily, 23 February 2001. <www.sciencedaily.com/releases/2001/02/010223080824.htm>.
Johns Hopkins Medical Institutions. (2001, February 23). One In Three Fatal Bicycle Accidents Linked To Alcohol. ScienceDaily. Retrieved November 25, 2014 from www.sciencedaily.com/releases/2001/02/010223080824.htm
Johns Hopkins Medical Institutions. "One In Three Fatal Bicycle Accidents Linked To Alcohol." ScienceDaily. www.sciencedaily.com/releases/2001/02/010223080824.htm (accessed November 25, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Tuesday, November 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

Newsy (Nov. 25, 2014) The US FDA is announcing new calorie rules on Tuesday that will require everywhere from theaters to vending machines to include calorie counts. Video provided by Newsy
Powered by NewsLook.com
Daily Serving Of Yogurt Could Reduce Risk Of Type 2 Diabetes

Daily Serving Of Yogurt Could Reduce Risk Of Type 2 Diabetes

Newsy (Nov. 25, 2014) Need another reason to eat yogurt every day? Researchers now say it could reduce a person's risk of developing type 2 diabetes. Video provided by Newsy
Powered by NewsLook.com
Madagascar Working to Contain Plague Outbreak

Madagascar Working to Contain Plague Outbreak

AFP (Nov. 24, 2014) Madagascar said Monday it is trying to contain an outbreak of plague -- similar to the Black Death that swept Medieval Europe -- that has killed 40 people and is spreading to the capital Antananarivo. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com
Are Female Bosses More Likely To Be Depressed?

Are Female Bosses More Likely To Be Depressed?

Newsy (Nov. 24, 2014) A new study links greater authority with increased depressive symptoms among women in the workplace. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins