title: The influence of air conditioning, humidity, temperature and other household characteristics on mite allergen concentrations in the northeastern United States.
abstract: BACKGROUND
  Information about the influence of housing and occupant characteristics on mite allergen concentrations is crucial to determine which methods could be used to decrease exposure of susceptible subjects.
  
  
  OBJECTIVE
  To identify housing and occupant characteristics that are associated with mite allergen concentrations in house dust collected from living rooms and mattresses.
  
  
  METHODS
  We collected dust samples from 750 homes in the northeastern US. The influence of various characteristics on concentrations of mite allergens (Der p 1 and Der f 1) was studied using multiple linear regression analysis.
  
  
  RESULTS
  Some characteristics, like absence of air conditioners, the presence of mold or mildew, and a lower temperature were consistently associated with higher concentrations of both mite allergens in dust from all sampling locations. However, none of these factors changed Der p 1 or Der f 1 concentrations by more than a factor of 2. People of white ethnic background had roughly two times higher mite allergen concentrations, while family income, family size, and education level only marginally influenced mite allergen concentrations.
  
  
  CONCLUSIONS
  Various housing characteristics have some influence on mite allergen concentrations, and could possibly be used to decrease exposure of susceptible subjects. However, only a limited percentage of the variation in mite allergen concentrations was explained by these characteristics.
authors.affiliation: Center for Perinatal, Pediatric and Environmental Epidemiology, Yale University School of Medicine, 1 Church Street 6th floor, New Haven, CT 06510, USA.
authors.forename: R T
authors.initials: RT
authors.lastname: van Strien
authors.forename: U
authors.initials: U
authors.lastname: Gehring
authors.forename: K
authors.initials: K
authors.lastname: Belanger
authors.forename: E
authors.initials: E
authors.lastname: Triche
authors.forename: J
authors.initials: J
authors.lastname: Gent
authors.forename: M B
authors.initials: MB
authors.lastname: Bracken
authors.forename: B P
authors.initials: BP
authors.lastname: Leaderer
mesh_terms: D000389:Air Conditioning; D016902:Air Pollution, Indoor / Q000032:analysis*; D039741:Antigens, Dermatophagoides / Q000032:analysis*; D015331:Cohort Studies; D004391:Dust / Q000032:analysis*; D004780:Environment, Controlled; D006798:Housing; D006801:Humans; D006813:Humidity; D009511:New England; D013696:Temperature
chemical_list: D039741:Antigens, Dermatophagoides; D004391:Dust