Infant Respiratory Symptoms Associated with Indoor Heating Sources
Elizabeth W. Triche, Kathleen Belanger,
William Beckett, Michael B. Bracken, Theodore R.
Holford, Janneane Gent, Thomas Jankun,
Jean-ellen McSharry and Brian P. Leaderer
Center for Perinatal, Pediatric and Environmental Epidemology,
Department of Epidemiology and Public Health, Yale University School of
Medicine, New Haven, Connecticut; and Department of Environmental Medicine,
University of Rochester School of Medicine and Dentistry, Rochester, New York
Correspondence: Correspondence and requests for reprints
should be addressed to Elizabeth W. Triche, Ph.D., Yale University School of
Medicine, Department of Epidemiology and Public Health, 60 College Street, P.O.
Box 208034, New Haven, CT 06520-8034. E-mail:
elizabeth.triche@yale.edu
ABSTRACT
This study examined the effects of indoor heating sources on
infant respiratory symptoms during the heating season of thefirst
year of life. Mothers delivering babies between 1993 and1996 at 12
hospitals in Connecticut and Virginia were enrolled.Daily symptom
and heating source use information about theirinfant was obtained
every 2 weeks during the first year of life.Heating sources included
fireplace, wood stove, kerosene heater,and gas space heater use.
Four health outcomes were analyzedby reporting period: days of
wheeze, episodes of wheeze, daysof cough, and episodes of cough. A
large percentage of infantshad at least one episode of cough (88%)
and wheeze (33%) duringthe heating season of the first year of life.
Wood stove, fireplace,kerosene heater, and gas space heater use was
intermittent acrossthe study period. In adjusted Poisson regression
models controllingfor important confounders, gas space heater use
was associatedwith episodes and days of wheeze. Wood stove use was
associatedwith total days of cough, and kerosene heater use was
associatedwith episodes of cough. Fireplace use was not associated
withany of the respiratory symptoms. Use of some heating sourcesappears related to respiratory symptoms in infants.
Key Words: cough gas space heaters infant respiratory
symptoms kerosene heaters wheeze wood stoves
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