Navigation Links
Wayne State study shows early research on cellphone conversations likely overestimated crash risk
Date:12/14/2011

DETROIT -- A Wayne State University study published in the January 2012 issue of the journal Epidemiology points out that two influential early studies of cellphone use and crash risk may have overestimated the relative risk of conversation on cellphones while driving.

In this new study, Richard Young, Ph.D., professor of research in Wayne State University's Department of Psychiatry and Behavioral Neurosciences in the School of Medicine, examined possible bias in a 1997 Canadian study and a 2005 Australian study. These earlier studies used cellphone billing records of people who had been in a crash and compared their cellphone use just before the crash to the same time period the day (or week) before the control window.

Young said the issue with these studies is that people may not have been driving during the entire control window period, as assumed by the earlier study investigators.

"Earlier case-crossover studies likely overestimated the relative risk for cellphone conversations while driving by implicitly assuming that driving during a control window was full time when it may have been only part time," said Young. "This false assumption makes it seem like cellphone conversation is a bigger crash risk than it really is."

In Young's new study, his research team used Global Positioning Satellite (GPS) data to track day-to-day driving of more than 400 drivers during a 100-day period. He then divided the days into pairs, with the first day representing the "control" day and the second day representing the "crash" day in the earlier studies. Overall, the team found little driving consistency in any given clock time period between the two days driving time on the control day was only about one-fourth of the driving time on the crash day, during any specific clock time period.

"This underestimation of the amount of driving in the control windows by nearly four times could reduce cellphone conversation time in that control period," Young said. "It makes it appear that there is less cellphone conversation in control periods than in the time just before a crash, making the relative risk estimate appear greater than it really is."

Young found that when the cellphone conversation time in the control window was adjusted for the amount of driving, the amount of cellphone usage in the control window was about the same as in the minutes before a crash. He concluded that the crash risk for cellphone conversation while driving is one-fourth of what was claimed in previous studies, or near that of normal baseline driving.

Young added that many well-controlled studies with real driving show that the primary increase in crash risk from portable electronic devices comes from tasks that require drivers to look at the device or operate it with their hands, such as texting while driving. Five other recent real-world studies concur with his conclusion that the crash risk from cellular conversations is not greater than that of driving with no conversation.

"Tasks that take a driver's eyes off the road or hands off the steering wheel are what increase crash risk," said Young. "Texting, emailing, manual dialing and so forth not conversation are what increase the risk of crashes while driving."

The National Transportation Safety Board has recommended that all 50 states and the District of Columbia ban the non-emergency use of portable electronic devices for all drivers. Young said this recommendation goes beyond the data from newer studies, including his, because it would ban cellphone conversations while driving.

"Recent real-world studies show that cellphone conversations do not increase crash risk beyond that of normal driving it is the visual-manual tasks that take the eyes off the road and the hands off the wheel that are the real risk," said Young.


'/>"/>
Contact: Julie O'Connor
julie.oconnor@wayne.edu
734-748-4207
Wayne State University - Office of the Vice President for Research
Source:Eurekalert

Related medicine news :

1. Community Health Systems, Inc.s Wayne T. Smith and Larry Cash Named Americas Top Healthcare CEO and CFO
2. Wayne State University study predicts risk of memory loss in healthy, older adults
3. Speaking the same language means better health care quality, Wayne State University study finds
4. Wayne State University researchers publish results settling multiple sclerosis debate
5. Wayne State study links testosterone with mens ability to woo potential mates
6. Wayne State leads study to improve management of cancer pain in African Americans
7. Wayne State researchers find new way to examine major depressive disorder in children
8. Wayne State University researchers win grant from the NSF to target tinnitus
9. Religion benefits traumatic brain injury victims, Wayne State University research finds
10. Health providers should emphasize breast cancer screening, Wayne State University research finds
11. Wayne State University researcher argues that sex reduces genetic variation
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/27/2016)... ... May 27, 2016 , ... In response to meager public ... unaware of the plight of aphasia. In collaboration with the American Aphasia Association, ... , The link between stroke and aphasia is relatively unknown, but through collaboration ...
(Date:5/27/2016)... ... May 27, 2016 , ... Aimed ... by inspiring human interest stories, courtesy of leaders in the nursing and health ... the industry, from leading advocates and associations—namely Jones & Bartlett Learning. , Jones ...
(Date:5/27/2016)... (PRWEB) , ... May 27, 2016 , ... ... in scholarships to students studying complementary medicine. Allison Outerbridge is this year’s ... her award on May 18 at the university’s Student Leadership Awards ceremony. , ...
(Date:5/26/2016)... ... 26, 2016 , ... Despite last week’s media reports hinting at a June ... wait until March 2017 for an interest rate increase, according to Rajeev Dhawan of ... , “The Federal Open Market Committee (FOMC) dot charts are of interest to the ...
(Date:5/26/2016)... ... , ... W.S. Badger Co. Inc ., the maker of certified organic ... Works Award for its use of effective workplace strategies to increase business and employee ... by the Families and Work Institute (FWI) and the Society for Human Resource Management ...
Breaking Medicine News(10 mins):
(Date:5/27/2016)... PUNE, India , May 27, 2016 ... in the instances of hypertension is driving ambulatory blood ... muscles lose their elasticity and their ability to respond ... blood pressure. This condition can lead to various cardiovascular ... and peripheral vascular disease. These diseases are growing in ...
(Date:5/27/2016)... -- The healthcare sector is large and ... falling under its umbrella.  A rather overlooked sector are ... about, these healthcare companies are still trying to prove ... by far the largest consumer of the healthcare market ... Nutranomics Inc. (OTC: NNRX), KollagenX Corp. (OTCQB: KGNX), Bioelectronics ...
(Date:5/26/2016)... , May 26, 2016   ... software and analytics, network solutions and technology-enabled ... announced it entered into a strategic channel ... of outpatient software solutions and revenue cycle ... specialty hospitals and rehabilitation clinics to optimize ...
Breaking Medicine Technology: