|
|
||||||||
Original Articles |
Unexplained autumn increases in hospital admissions for asthma have been reported in many countries, including the United States, Canada, England and Wales. To investigate the role of infection, the association was tested between hospital admissions for asthma and respiratory infections among preschool children in Metropolitan Toronto, Canada during the period 1981 to 1989. The seasonal pattern in overall hospital utilization was assessed by admissions for nonrespiratory diseases. Time series analysis was used to remove potentially confounding temporal trends and the influence of correlated errors. A fourfold increase in asthma admissions occurred between July and October unaccompanied by similar increases in nonrespiratory admissions. Admissions began increasing during the third week of August, peaked during the third week in September, and slowly decreased during November and December. After adjusting for serial correlation, trends, climate, ambient air pollution and aeroallergens, the seasonal pattern of respiratory infection explained 14% of the variance in asthma admissions. Based on seasonal patterns, respiratory infection is the major identifiable risk factor for the large autumnal increase in asthma admissions.
This article has been cited by other articles:
![]() |
N W Johnston and M R Sears Asthma exacerbations {middle dot} 1: Epidemiology. Thorax, August 1, 2006; 61(8): 722 - 728. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. L. Kozyrskyj, M. E. Dahl, W. J. Ungar, A. B. Becker, and B. J. Law Antibiotic treatment of wheezing in children with asthma: what is the practice? Pediatrics, June 1, 2006; 117(6): e1104 - e1110. [Abstract] [Full Text] [PDF] |
||||
![]() |
R. A. Silverman, K. Ito, L. Stevenson, and H. M. Hastings The Relationship of Fall School Opening and Emergency Department Asthma Visits in a Large Metropolitan Area Arch Pediatr Adolesc Med, September 1, 2005; 159(9): 818 - 823. [Abstract] [Full Text] [PDF] |
||||
![]() |
S K Weiland, A Husing, D P Strachan, P Rzehak, and N Pearce Climate and the prevalence of symptoms of asthma, allergic rhinitis, and atopic eczema in children Occup. Environ. Med., July 1, 2004; 61(7): 609 - 615. [Abstract] [Full Text] [PDF] |
||||
![]() |
R. F. Lemanske Jr. Is Asthma an Infectious Disease?: Thomas A. Neff Lecture Chest, March 1, 2003; 123(2007): 385S - 390S. [Abstract] [Full Text] [PDF] |
||||
![]() |
W. Nystad, P. Nafstad, and J. J. K. Jaakkola The effect of respiratory tract infections on reported asthma symptoms Scand J Public Health, January 1, 2002; 30(1): 70 - 75. [Abstract] [PDF] |
||||
![]() |
A. L. Kozyrskyj, C. A. Mustard, M. S. Cheang, and F. Simons Income-based drug benefit policy: impact on receipt of inhaled corticosteroid prescriptions by Manitoba children with asthma Can. Med. Assoc. J., October 1, 2001; 165(7): 897 - 902. [Abstract] [Full Text] [PDF] |
||||
![]() |
D. W. Mapel Hemoptysis Season Chest, August 1, 2000; 118(2): 288 - 289. [Full Text] [PDF] |
||||
![]() |
F. Boulay, F. Berthier, O. Sisteron, Y. Gendreike, and B. Blaive Seasonal Variation in Cryptogenic and Noncryptogenic Hemoptysis Hospitalizations in France Chest, August 1, 2000; 118(2): 440 - 444. [Abstract] [Full Text] [PDF] |
||||
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |