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Ann Allergy Asthma Immunol. 2006 Nov;97(5):628-35.

Room-specific characteristics of suburban homes as predictors of indoor allergen concentrations.

Author information

1
Department of Pediatrics, Division of Allergy and Immunology, University of Arkansas for Medical Sciences College of Medicine, Arkansas Children's Hospital Research Institute, Little Rock, Arkansas 72202, USA. perrytamarat@uams.edu

Abstract

BACKGROUND:

Room characteristics predicting indoor allergen exposure in suburban homes have not been clearly identified.

OBJECTIVE:

To examine relationships between room characteristics and concentrations of indoor allergens in homes of suburban asthmatic patients.

METHODS:

The homes of 339 asthmatic children ages 6 to 17 years were studied. Home inspections were conducted by a trained technician, and dust samples were analyzed for indoor allergen content. A high allergen concentration was defined as 8 microg (U)/g or more of fine dust.

RESULTS:

Infrequent sheet washing and wall-to-wall carpet were risk factors for high bedroom dust mite concentrations. Infrequent sheet washing was also a risk factor for high Fel d 1 concentrations. Food remains in the bedroom was a risk factor for high bedroom Bla g 1 levels, and exposed food, leaks, and dirty pots were all risk factors for high kitchen Bla g 1 levels. The combination of lack of mattress or pillow encasements, infrequent sheet washing, and carpeting was associated with a 24-fold increase in odds of a high dust mite concentration (odds ratio [OR], 24.1; 95% confidence interval [CI], 3.2-181.4). Among non-cat owners, the combination of stuffed toys on the bed, lack of mattress or pillow encasements, and infrequent sheet washing was associated with a 49-fold increase in odds of a high Fel d 1 level (OR, 49.4; 95% CI, 2.8-887.3). The combination of leaks, exposed food, and dirty pots was associated with a high kitchen Bla g 1 concentration (OR, 10.6; 95% CI, 2.8-40.5).

CONCLUSIONS:

Specific room characteristics predict high indoor allergen exposure among children with asthma, and a combination of these characteristics may further increase the risk of high allergen exposure.

PMID:
17165271
DOI:
10.1016/S1081-1206(10)61092-7
[Indexed for MEDLINE]
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