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Int Arch Allergy Immunol. 2007;144(2):128-36. Epub 2007 May 25.

Hospitalizations for anaphylaxis in Florida: epidemiologic analysis of a population-based dataset.

Author information

1
Division of Epidemiology, The University of Texas School of Public Health at Houston, Tex., USA. zuber.mulla@ttuhsc.edu

Abstract

BACKGROUND:

Previous epidemiologic studies of anaphylaxis have been single-institution investigations. The objective of this study was to determine the annual hospital discharge rate and risk factors for anaphylaxis outcomes throughout Florida.

METHODS:

464 patients who were hospitalized in Florida for anaphylaxis and discharged in 2001 were identified using a statewide database and ICD-9-CM (International Classification of Diseases, 9th revision, Clinical Modification) codes. Linear regression was used to determine the predictors of length of stay (LOS) and total charges. Relative risks (RR) for ventilator-assisted respiration and anaphylaxis due to food were calculated using binomial regression.

RESULTS:

Annual hospital discharge rate for anaphylaxis was 2.8/100,000 population. Hospital mortality rate was 0.86%. Median LOS was 1 day. Median total charges was USD 4,982. Asthmatics had increased risk of receiving ventilator-assisted respiration (adjusted RR = 2.72, p = 0.04). Likelihood of hospitalization for anaphylaxis increased with age for both sexes (p < 0.0001). Patients who were <18 years old were three times as likely to be hospitalized for food anaphylaxis (versus other causes) compared to patients who were 71+ years old (adjusted RR = 3.25, p = 0.004).

CONCLUSION:

Young age was associated with increased risk of hospitalization for anaphylaxis to foods. Asthmatics had increased risk of receiving ventilator-assisted respiration. Likelihood of hospitalization increased with age.

PMID:
17536221
DOI:
10.1159/000103224
[Indexed for MEDLINE]
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