Document Detail


Monthly, weekly, and daily patterns in the incidence of congestive heart failure.
MedLine Citation:
PMID:  11388945     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: To determine whether there are patterns in the incidence of emergency department (ED) visits for congestive heart failure (CHF) by month of the year, day of the week, or hour of the day. METHODS: This was a retrospective analysis of a computerized billing database of ED visits, involving seven northern New Jersey hospitals EDS: Consecutive patients seen by emergency physicians over an 11-year period (January 1, 1988--December 31, 1998) were included. Chi-square tests were used to evaluate for significant differences (p < 0.05). RESULTS: There were a total of 2,370,233 patients in the database, of whom 26,224 had a primary ED diagnosis of CHF. The chi-square test rejected uniformity for month of the year, for day of the week, and for hour of the day (p < 0.0001). Visits for CHF were increased in the winter months. Compared with the average of the other months, December was the highest (14.3% above, p < 0.0001) and August was the lowest (15.5% below, p < 0.0001). There was also a day-of-the-week variation. Compared with the average of the other days, Monday was the highest (14.5% above, p < 0.0001) and Saturday was the lowest (9.6% below, p < 0.0001). There was also an hour-of-the-day pattern, with a rapid rise after 8 AM and a downtrend after 3 PM. CONCLUSIONS: These data revealed a higher incidence of ED visits for CHF in the winter months, on Mondays, and during the hours of 8 AM to 3 PM. In comparison with previous studies, these data revealed a similar pattern by month of the year and a different pattern by hour of the day.
Authors:
J R Allegra; D G Cochrane; R Biglow
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine     Volume:  8     ISSN:  1069-6563     ISO Abbreviation:  Acad Emerg Med     Publication Date:  2001 Jun 
Date Detail:
Created Date:  2001-06-04     Completed Date:  2001-10-04     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  9418450     Medline TA:  Acad Emerg Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  682-5     Citation Subset:  IM    
Affiliation:
Department of Emergency Medicine, Morristown Memorial Hospital, Morristown, NJ 07962, USA. johnalle@aol.com
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MeSH Terms
Descriptor/Qualifier:
Chi-Square Distribution
Circadian Rhythm
Emergency Service, Hospital / utilization*
Heart Failure / epidemiology*
Humans
Incidence
New Jersey / epidemiology
Retrospective Studies
Risk Factors
Seasons

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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