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Warm Homes for Elder New Zealanders (WHEZ)

15. juni 2015 opdateret af: 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.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

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.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

522

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • New Zealand
      • Christchurch, New Zealand
        • Christchurch
      • Wanganui, New Zealand
        • Wanganui / Manawatu
      • Wellington, New Zealand
        • Wellington / Hutt/ Porirua

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

55 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

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

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Støttende pleje
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Enkelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: 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.
Adfærdsmæssigt: 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.
Andet: 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.
Adfærdsmæssigt: No intervention : control arm
Do not receive the money or pamphlet in the initial study year

Hvad måler undersøgelsen?

Primære resultatmål

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

Sekundære resultatmål

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

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

University of Otago

Samarbejdspartnere

Health Research Council, New Zealand

Efterforskere

  • Ledende efterforsker: Philippa L Howden-Chapman, PhD, University of Otago

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Hjælpsomme links

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. april 2009

Primær færdiggørelse (Faktiske)

1. februar 2013

Studieafslutning (Faktiske)

1. februar 2013

Datoer for studieregistrering

Først indsendt

2. august 2011

Først indsendt, der opfyldte QC-kriterier

20. juni 2012

Først opslået (Skøn)

25. juni 2012

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

17. juni 2015

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

15. juni 2015

Sidst verificeret

1. juni 2015

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • HRC08/072AR

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Energy Voucher

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Sponsorer og samarbejdspartnere

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Betingelser

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Narkotikainterventioner

Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

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