reference : Short-term outdoor temperature change and emergency department visits for asthma among children: A case-crossover study

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Bibliographic fields
reftype Journal Article
Abstract Although weather changes are known to cause asthma symptoms, their impact on asthma-related health-care utilization is poorly understood. The objective of the present study was to determine the association between short-term outdoor temperature change and asthma-related emergency department (ED) visits among children 3-18 years of age in Detroit, Michigan, in 2000-2001. Descriptive analyses of patient and ED visit characteristics were performed. A case-crossover study utilizing time-stratified controls was conducted to determine the impact of maximum temperature change and change rate measured during 4-, 8-, 12-, and 24-hour periods. Multivariable conditional logistic regression demonstrated the relation between ED visits and temperature change after controlling for other weather and pollutant measures. There were 4,804 asthma-related ED visits during the study period, and they occurred most frequently in the fall and during morning hours. The case-crossover study showed a statistically significant inverse relation between ED visits and maximum 24-hour temperature change after adjustment for climatic factors (for temperature change, odds ratio = 0.992, P = 0.04; for temperature change rate, odds ratio 0.972, P = 0.01). The association persisted after air pollutant measures were added to the model, although the association was not significant. Despite the finding that a greater 24-hour temperature change decreased the risk of asthma-related ED visits, the overall results suggested a negligible association with short-term temperature change.
Author Wasilevich, E. A.; Rabito, F.; Lefante, J.; Johnson, E.
DOI 10.1093/aje/kws326
Date Oct 1
ISSN 1476-6256
Issue suppl 7
Journal American Journal of Epidemiology
Keywords Adolescent; Asthma/ epidemiology/therapy; Child; Child, Preschool; Cross-Over Studies; Emergency Service, Hospital/ statistics & numerical data; Female; Humans; Logistic Models; Male; Michigan/epidemiology; Seasons; Temperature; Time Factors
Language eng
Notes Wasilevich, Elizabeth A Rabito, Felicia Lefante, John Johnson, Eric United States Am J Epidemiol. 2012 Oct 1;176 Suppl 7:S123-30. doi: 10.1093/aje/kws326.
Pages S123-S130
Title Short-term outdoor temperature change and emergency department visits for asthma among children: A case-crossover study
Volume 176
Year 2012
Bibliographic identifiers
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_record_number 5357
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