NCT00437541

Brief Summary

In six communities we will seek out households where someone who has a history of respiratory problems. For the first winter we will measure temperature and humidity of the house and health of occupants. We will insulate half the houses and the next winter compare them with the uninsulated houses to see if warmer houses improve health.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
4,000

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Jul 2001

Geographic Reach
1 country

8 active sites

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

July 1, 2001

Completed
1.4 years until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2002

Completed
4.2 years until next milestone

First Submitted

Initial submission to the registry

February 20, 2007

Completed
1 day until next milestone

First Posted

Study publicly available on registry

February 21, 2007

Completed
Last Updated

February 21, 2007

Status Verified

February 1, 2007

First QC Date

February 20, 2007

Last Update Submit

February 20, 2007

Conditions

Respiratory IllnessAsthma

Keywords

InsulationWarmthHumidityDampColdRespiratoryMould

Outcome Measures

Primary Outcomes (2)

  • Self reported general health, During the first winter post intervention

  • Indoor temperature and relative humidity, During the first winter post intervention

Secondary Outcomes (5)

  • Energy consumption, During the first winter post intervention

  • Wheezing, During the first winter post intervention

  • Days off school and work, During the first winter post intervention

  • GP visits, During the first winter post intervention

  • Inpatient hospital admissions, During the first winter post intervention

Interventions

Insulation retrofitted into houseDEVICE

Eligibility Criteria

Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

  • Live in Study area
  • At least one person in the household must had had respiratory illness within the last year, well members of the same household may also participate
  • house currently uninsulated
  • interested in taking part in research

You may not qualify if:

  • Intending to move within study period

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (8)

Otara Health Inc

Otara, Auckland, New Zealand

Location

Crown Public Health

Christchurch, Christchurch, New Zealand

Location

Te Iwi O Rakaipaaka

Mahia/Nuhaka, Gisborne, New Zealand

Location

Te Wahine O Kahungungu

Mahia/Nuhaka, Gisborne, New Zealand

Location

Opotiki Trade Training

Opotiki, Gisborne, New Zealand

Location

Te Puni Kokiri

New Plymouth, Taranaki Region, New Zealand

Location

Porirua Housing Action Group

Porirua, Wellington Region, New Zealand

Location

Maori Womans Welfare League

Rata - Hokitika, West Coast, New Zealand

Location

Related Publications (1)

  • Howden-Chapman P, Crane J, Matheson A, Viggers H, Cunningham M, Blakely T, O'Dea D, Cunningham C, Woodward A, Saville-Smith K, Baker M, Waipara N. Retrofitting houses with insulation to reduce health inequalities: aims and methods of a clustered, randomised community-based trial. Soc Sci Med. 2005 Dec;61(12):2600-10. doi: 10.1016/j.socscimed.2005.04.049. Epub 2005 Aug 2.

    PMID: 16061320RESULT

Related Links

MeSH Terms

Conditions

AsthmaCommon Cold

Condition Hierarchy (Ancestors)

Bronchial DiseasesRespiratory Tract DiseasesLung Diseases, ObstructiveLung DiseasesRespiratory HypersensitivityHypersensitivity, ImmediateHypersensitivityImmune System DiseasesRespiratory Tract InfectionsInfectionsPicornaviridae InfectionsRNA Virus InfectionsVirus Diseases

Study Officials

  • Philippa L Howden-Chapman, PhD

    University of Otago

    STUDY DIRECTOR

  • Julian Crane, FRCP

    University of Otago

    PRINCIPAL INVESTIGATOR

  • Michael G Baker, FRACMA

    University of Otago

    PRINCIPAL INVESTIGATOR

  • Chris Cunningham, PhD

    Massey University

    PRINCIPAL INVESTIGATOR

  • Kay Saville-Smith, MA Hons

    CRESA

    PRINCIPAL INVESTIGATOR

  • Nick Waipara, PhD

    Landcare Research Limited

    PRINCIPAL INVESTIGATOR

  • Alistair Woodward, PhD

    University of Otago

    PRINCIPAL INVESTIGATOR

  • Des O'Dea, BSc Hons

    University of Otago

    PRINCIPAL INVESTIGATOR

  • Tony Blakely, PhD

    University of Otago

    PRINCIPAL INVESTIGATOR

  • Cheryl Brunton, FAFPHM

    University of Otago

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER

Study Record Dates

First Submitted

February 20, 2007

First Posted

February 21, 2007

Study Start

July 1, 2001

Study Completion

December 1, 2002

Last Updated

February 21, 2007

Record last verified: 2007-02

Locations

NZ(8)