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Trial details imported from ClinicalTrials.gov

For full trial details, please see the original record at https://clinicaltrials.gov/study/NCT00437541




Registration number
NCT00437541
Ethics application status
Date submitted
20/02/2007
Date registered
21/02/2007
Date last updated
21/02/2007

Titles & IDs
Public title
Housing, Insulation and Health Study
Scientific title
The Impact of Insulating Domestic Houses on the Health of Occupants: an Intervention Study
Secondary ID [1] 0 0
01/06/068
Secondary ID [2] 0 0
Insulation study
Universal Trial Number (UTN)
Trial acronym
HIHS
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Respiratory Illness 0 0
Asthma 0 0
Condition category
Condition code

Intervention/exposure
Study type
Interventional
Description of intervention(s) / exposure
Comparator / control treatment
Control group

Outcomes
Primary outcome [1] 0 0
Self reported general health, During the first winter post intervention
Timepoint [1] 0 0
Primary outcome [2] 0 0
Indoor temperature and relative humidity, During the first winter post intervention
Timepoint [2] 0 0
Secondary outcome [1] 0 0
Energy consumption, During the first winter post intervention
Timepoint [1] 0 0
Secondary outcome [2] 0 0
Wheezing, During the first winter post intervention
Timepoint [2] 0 0
Secondary outcome [3] 0 0
Days off school and work, During the first winter post intervention
Timepoint [3] 0 0
Secondary outcome [4] 0 0
GP visits, During the first winter post intervention
Timepoint [4] 0 0
Secondary outcome [5] 0 0
Inpatient hospital admissions, During the first winter post intervention
Timepoint [5] 0 0

Eligibility
Key inclusion criteria
* 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
Minimum age
No limit
Maximum age
No limit
Sex
Both males and females
Can healthy volunteers participate?
No
Key exclusion criteria
* Intending to move within study period

Study design
Purpose of the study
Prevention
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Open (masking not used)
Who is / are masked / blinded?



Intervention assignment
Parallel
Other design features
Phase
Not applicable
Type of endpoint/s
Statistical methods / analysis

Recruitment
Recruitment status
Completed
Data analysis
Reason for early stopping/withdrawal
Other reasons
Date of first participant enrolment
Anticipated
Actual
1/07/2001
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
Actual
Sample size
Target
Accrual to date
Final
Recruitment in Australia
Recruitment state(s)
Recruitment outside Australia
Country [1] 0 0
New Zealand
State/province [1] 0 0
Auckland
Country [2] 0 0
New Zealand
State/province [2] 0 0
East Coast
Country [3] 0 0
New Zealand
State/province [3] 0 0
Gisborne
Country [4] 0 0
New Zealand
State/province [4] 0 0
Taranaki
Country [5] 0 0
New Zealand
State/province [5] 0 0
Wellington
Country [6] 0 0
New Zealand
State/province [6] 0 0
West Coast
Country [7] 0 0
New Zealand
State/province [7] 0 0
Christchurch

Funding & Sponsors
Primary sponsor type
Other
Name
University of Otago
Address
Country

Ethics approval
Ethics application status

Summary
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 website
https://clinicaltrials.gov/study/NCT00437541
Trial related presentations / publications
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.
Public notes

Contacts
Principal investigator
Name 0 0
Philippa L Howden-Chapman, PhD
Address 0 0
University of Otago
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for public queries
Name 0 0
Address 0 0
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for scientific queries



Summary Results

For IPD and results data, please see https://clinicaltrials.gov/study/NCT00437541