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Warm Homes for Elder New Zealanders (WHEZ)

15 juin 2015 mis à jour par: Philippa Howden-Chapman, University of Otago

Warm Homes for Elder New Zealanders: a Community Trial of People With COPD

Aim

The purpose of this study is to evaluate whether fuel subsidies reduce exacerbations of COPD among people aged over 55, and therefore whether providing such subsidies is a cost-beneficial policy initiative.

The Warm Homes for Elder New Zealanders Study enrolled community-dwelling people aged over 55 with moderate or worse COPD. Prior to the study commencing the houses were insulated (if feasible, & the house-owner agreed). Data were collected on the health and energy use of the participants.

The households randomly assigned to the "early" intervention group had a subsidy to their power account their first winter in the study. The subsidy was the intervention and was designed to enable the participants, if they chose to do so, to keep their house warmer during the winter.

Aperçu de l'étude

Statut

Complété

Les conditions

Intervention / Traitement

Description détaillée

Warm Homes for Elder New Zealanders (WHEZ)

Background Although there has been considerable recent work on the prevention, management and causes of Chronic Obstructive Pulmonary Disease (COPD), the contribution of housing has not been well researched. This is despite the socio-economic patterning of COPD (Maori women have the highest rate of COPD that has been recorded for any group of women), and the relationship between socio-economic deprivation and housing conditions.

It is likely that improved heating would reduce exacerbations of COPD as:

  • COPD patients with the most advanced disease tend to be older people who often live on a fixed income and may be unable to afford adequate heating
  • There is a high excess of winter hospitalisations in COPD patients indicating COPD exacerbations may be triggered by cold conditions.
  • About one third of exacerbations of COPD are triggered by respiratory infections.
  • The Housing, Insulation and Health Study demonstrated a reduction in self-reported respiratory disease after houses were insulated. Therefore improving the heating in households with a COPD patient may reduce respiratory infections and this in turn would reduce the number and severity of exacerbations.

The percentage of people over 65 in New Zealand will increase from 12% to 22% over the next 25 years. Therefore it will become increasingly important to find cost-effective ways of reducing the morbidity of the older age group. As COPD is a significant cause of morbidity amongst older people, this study investigates a potentially cost effective intervention to reduce both the likelihood of expensive hospital stays and improve the quality of life for older people.

Aim To evaluate whether fuel subsidies reduce exacerbations of COPD among people aged over 55, and therefore whether providing such subsidies is a cost-beneficial policy initiative.

Potential Benefits The potential benefits of the study include reducing the burden of disease. The patients and their caregivers may experience improved quality of life. Hospitals may experience fewer patients requiring treatment during the winter. A cost-benefit analysis will quantify the benefits.

Type d'étude

Interventionnel

Inscription (Réel)

522

Phase

  • N'est pas applicable

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Lieux d'étude

  • Nouvelle-Zélande
      • Christchurch, Nouvelle-Zélande
        • Christchurch
      • Wanganui, Nouvelle-Zélande
        • Wanganui / Manawatu
      • Wellington, Nouvelle-Zélande
        • Wellington / Hutt/ Porirua

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

55 ans et plus (Adulte, Adulte plus âgé)

Accepte les volontaires sains

Non

Sexes éligibles pour l'étude

Tout

La description

Inclusion Criteria:

  • Post Bronchodilator FEV1/FVC ratio < Lower Limit of Normal (NHanesIII)
  • Post Bronchodilator FEV1 < 80% of the predicted FEV1 (NHanesIII)

OR - In the last three years either went to hospital for their COPD or took antibiotics/steriods for their COPD

Exclusion Criteria:

  • Not planning to stay in the same dwelling until the end of the study
  • Does not want to take part in research
  • Unwilling to answer inclusion questionnaire
  • Unable to communicate effectively

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: Soins de soutien
  • Répartition: Randomisé
  • Modèle interventionnel: Affectation parallèle
  • Masquage: Seul

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Expérimental: Voucher
Receive the intervention ("Energy Voucher") the first winter enrolled in the study. The intervention is a electricity voucher and a short pamphlet describing how to work out how much heat the voucher can buy.
Comportemental: Energy Voucher
Receive the intervention the first winter enrolled in the study. The intervention is a electricity voucher and a short pamphlet describing how to work out how much heat the voucher can buy.
Autre: Control
Receive the intervention the second winter enrolled in the study (thus "No intervention : control arm"). The intervention is a electricity voucher and a short pamphlet describing how to work out how much heat the voucher can buy.
Comportemental: No intervention : control arm
Do not receive the money or pamphlet in the initial study year

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Délai
Moderate or severe exacerbations of COPD during winter for which hospitalisation, systemic corticosteroids and/or antibiotics are required to treat the exacerbation
Délai: Four months
Four months

Mesures de résultats secondaires

Mesure des résultats
Délai
Severe exacerbations of COPD during winter for which hospitalisation is required to treat the exacerbation
Délai: Four months
Four months
Moderate exacerbations of COPD during winter; which will be defined as requiring treatment with systemic corticosteroids and/or antibiotics
Délai: Four months
Four months
All-cause hospitalisation during winter
Délai: Four months
Four months
Temperature in the living and bedrooms during winter
Délai: Four months
Four months
Electricity usage during winter
Délai: Four months
Four months
Costs to health care system of index participant during winter
Délai: Four months
Four months
Self-reported quality of life for index participant during winter
Délai: Four months
Four months
Respiratory health of other people living in household during winter
Délai: Four months
Four months
Any changes in index participant baseline lung function
Délai: course of study ( up to 18 months)
course of study ( up to 18 months)
Study withdrawals due to death or greater dependency
Délai: course of study (up to 18 months)
course of study (up to 18 months)
Support person burden
Délai: course of study (up to 18 months)
course of study (up to 18 months)

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

University of Otago

Collaborateurs

Health Research Council, New Zealand

Les enquêteurs

  • Chercheur principal: Philippa L Howden-Chapman, PhD, University of Otago

Publications et liens utiles

La personne responsable de la saisie des informations sur l'étude fournit volontairement ces publications. Il peut s'agir de tout ce qui concerne l'étude.

Publications générales

Liens utiles

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude

1 avril 2009

Achèvement primaire (Réel)

1 février 2013

Achèvement de l'étude (Réel)

1 février 2013

Dates d'inscription aux études

Première soumission

2 août 2011

Première soumission répondant aux critères de contrôle qualité

20 juin 2012

Première publication (Estimation)

25 juin 2012

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Estimation)

17 juin 2015

Dernière mise à jour soumise répondant aux critères de contrôle qualité

15 juin 2015

Dernière vérification

1 juin 2015

Plus d'information

Termes liés à cette étude

Mots clés

Termes MeSH pertinents supplémentaires

Autres numéros d'identification d'étude

  • HRC08/072AR

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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