The aim of the study was to evaluate the risk of Friday the 13th on hospital admission rates and emergency department (ED) visits.
This was a retrospective chart review of all ED visits on Friday the 13th from November 13, 2002, to December 13, 2009, from 6 hospital-based EDs. Thirteen unlikely conditions were evaluated as well as total ED volumes. As a control, the Friday before and after and the month before and after were used. χ2 Analysis and Wilcoxon rank sum tests were used for each variable, as appropriate.
A total of 49 094 patient encounters were evaluated. Average ED visits for Friday the 13th were not increased compared with the Friday before and after and the month before. However, compared with the month after, there were fewer ED visits on Friday the 13th (150.1 vs 134.7, P = .011). Of the 13 categories evaluated, only penetrating trauma was noted to have an increase risk associated with Friday the 13th (odds ratio, 1.65; 95% confidence interval, 1.04-2.61). No other category was noted to have an increase risk on Friday the 13th compared with the control dates.
Although the fear of Friday the 13th may exist, there is no worry that an increase in volume occurs on Friday the 13th compared with the other days studies. Of 13 different conditions evaluated, only penetrating traumas were seen more often on Friday the 13th. For those providers who work in the ED, working on Friday the 13th should not be any different than any other day.
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- Superstitions in medicine: bad luck or bad logic?.Ann Emerg Med. May 1998; 31: 650-652
- The full moon and ED patient volumes: unearthing a myth.Am J Emerg Med. 1996; 14: 161-164
- A link between lunar phase and medically unexplained stroke symptoms: an unearthly influence?.J Psychosom Res. 2008; 65: 131-133
- Lunar phases are not related to the occurrence of acute myocardial infarction and sudden cardiac death.Resuscitation. 2003; 56: 187-189
- The influence of the full moon on seizure frequency: myth or reality?.Epilepsy Behav. 2004; 5: 596-597
- Lunar phases and seizure occurrence: just an ancient legend?.Neurology. 2006; 66: 1442-1443
- Trauma and the full moon: a waning theory.Ann Emerg Med. 1989; 18: 763-765
- Cyclical calendar and lunar patterns in automobile property accidents and injury accidents.Percept Mot Skills. 1998; 86: 299-302
- Geophysical variables and behavior: LXXII. Barometric pressure, lunar cycle, and traffic accidents.Percept Mot Skills. 1993; 77: 371-376
- Barking mad? another lunatic hypothesis bites the dust.BMJ. 2000; 321: 1561-1563
- Do animals bite more during a full moon? Retrospective observational analysis.BMJ. 2000; 321: 1559-1561
- Lunar cycle and consultations for anxiety and depression in general practice.Int J Soc Psychiatry. 1997; 43: 29-34
http://news.nationalgeographic.com/news/2004/02/0212_040212_friday13.html (Accessed January 19, 2011).
http://news.bbc.co.uk/2/hi/uk_news/england/hampshire/6896203.stm (Accessed January 19, 2011).
- Panati's extraordinary origins of everyday things.Harper & Row, New York1987
- Friday the 13th and full-moon: the “worst case scenario” or only superstition?.Am J Emerg Med. 2001; 19: 319-320
- Is Friday the 13th bad for your health?.BMJ. 1993; 307: 1584-1586
- Traffic deaths and superstition on Friday the 13th.Am J Psychiatry. 2002; 159: 2110-2111
- Females do not have more injury road accidents on Friday the 13th.BMC Public Health. 2004; 4: 54
Published online: August 22, 2011
Accepted: June 15, 2011
Received in revised form: June 10, 2011
Received: March 2, 2011
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