TY - JOUR T1 - <span hwp:id="article-title-1" class="article-title">Upgrading home heating systems improved subjective symptoms in children with asthma</span><span hwp:id="article-title-2" class="sub-article-title">Commentary</span> JF - Evidence Based Nursing JO - Evid Based Nurs SP - 42 LP - 42 DO - 10.1136/ebn.12.2.42 VL - 12 IS - 2 AU - Sandra Small Y1 - 2009/04/01 UR - http://ebn.bmj.com/content/12/2/42.abstract N2 - P Howden-ChapmanProf P Howden-Chapman, University of Otago, Wellington, New Zealand; philippa.howden-chapman@otago.ac.nzDoes upgrading home heating systems improve the health of children with asthma?Design:randomised controlled trial. ClinicalTrials.gov NCT00489762Allocation: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 … ER -