TREATMENT
Upgrading home heating systems improved subjective symptoms in children with asthma
| The first 150 words of the full text of this article appear below. |
P Howden-Chapman
Prof P Howden-Chapman, University of Otago, Wellington, New Zealand; philippa.howden-chapman@otago.ac.nz
Does upgrading home heating systems improve the health of children with asthma?
Design: randomised controlled trial. ClinicalTrials.gov NCT00489762 [ClinicalTrials.gov]
Allocation: concealed.
Blinding: unblinded.
Follow-up period: baseline measures taken during winter 2005 and follow-up measures taken during winter 2006.
Setting: households in 5 communities in New Zealand.
Patients:
409 children 6–12 years of age who had physician diagnosed asthma that was symptomatic in the previous year and slept 
4 nights/week in a house with a less effective form of heating (unflued gas or plug-in electric heaters).
Intervention:
installation of a non-polluting, more effective replacement heater (heat pump, wood pellet burner, or flued gas) before winter 2006 (n = 200) or maintenance of the old heating system for another winter (n = 209) (this group received new heaters after completion of the trial). Houses in both groups were insulated to building
School of Nursing, Memorial University, St John's, Newfoundland, Canada
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