Daylight Savings Time Can Be A Cruel April Fools Joke

Perhaps daylight savings time makes our lives easier, but according to the following study posted on the National Health Institute website, daylight savings time can also be a cruel April fools joke. As we all lose an hour of sleep when our clocks spring ahead each daylight savings time, fatal traffic accidents increase dramatically leading to a deadly spring break.

In spite of this loss of sleep at Daylight Savings Time, individuals are responsible for safe driving. If you have been injured in a car accident around Daylight Savings Time or in the rest of the year, let the experienced personal injury lawyers at Weitz & Luxenberg handle your car accident claim. Fill out this short form for a FREE LEGAL REVIEW.

Sleep Med. 2001 Jan;2(1):31-36.

Fatal accidents following changes in daylight savings time: the American experience.

Varughese J, Allen RP.

Department of Symbolic Systems, School of Humanities and Sciences, Stanford University, CA, Stanford, USA

Objective: This study examines specific hypotheses that both sleep loss and behavioral changes occurring with the time shifts for Daylight Savings Time (DST) significantly effect the number of fatal traffic accidents in the United States of America.Background: It has been reported that there is a significant increase in the number of automobile accidents in the spring shift to DST [(Daylight Savings Time)] due to the loss of 1 h of sleep. But the extra hour gained at night with the shift from DST [(Daylight Savings Time)] in the fall has been variably reported to be associated with increases and decreases in the number of automobile accidents which may reflect either behavioral anticipation with an extended late night prior to the change or the benefit of extra sleep after the change.Methods: Data from 21 years of United States' fatal automobile accidents were gathered. The mean number of accidents on the days at the time of the shifts (Saturday, Sunday and Monday) was compared to the average of the corresponding mean number of accidents on the matching day of the weeks preceding and following the shift. This was repeated for each DST [(Daylight Savings Time)] shift. The number of accidents for a particular shift was also correlated with the year of the accidents.Results: There was a significant increase in accidents for the Monday immediately following the spring shift to DST [(Daylight Savings Time)] (t=1.92, P=0.034). There was also a significant increase in number of accidents on the Sunday of the fall shift from DST [(Daylight Savings Time)] (P<0.002). No significant changes were observed for the other days. A significant negative correlation with the year was found between the number of accidents on the Saturdays and Sundays but not Mondays.Conclusions: The sleep deprivation on the Monday following shift to DST [(Daylight Savings Time)] in the spring results in a small increase in fatal accidents. The behavioral adaptation anticipating the longer day on Sunday of the shift from DST [(Daylight Savings Time)] in the fall leads to an increased number of accidents suggesting an increase in late night (early Sunday morning) driving when traffic related fatalities are high possibly related to alcohol consumption and driving while sleepy. Public health educators should probably consider issuing warnings both about the effects of sleep loss in the spring shift and possible behaviors such as staying out later, particularly when consuming alcohol in the fall shift. Sleep clinicians should be aware that health consequences from forced changes in the circadian patterns resulting from DST [(Daylight Savings Time)] come not only from physiological adjustments but also from behavioral responses to forced circadian changes.

PMID: 11152980 [PubMed - as supplied by publisher]

Words in brackets, "[]", have been added to the original abstract.

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