Work

Retrofitting home insulation reduces incidence and severity of chronic respiratory disease

Year: 2022

Type: article

Abstract: To assess whether retrofitting home insulation can reduce the risk of respiratory disease incidence and exacerbation, a retrospective cohort study was undertaken using linked data from a national intervention program. The study population was made up of 1 004 795 residents from 205 001 New Zealand houses that received an insulation subsidy though a national Energy Efficiency and Conservation Authority program. A difference-in-difference model compared changes in the number of prescriptions dispensed for respiratory illness post- insulation to a control population over the same timeframe. New prescribing of chronic respiratory disease medication at follow-up was used to compare incidence risk ratios between intervention and control groups. Chronic respiratory disease incidence was significantly lower in the intervention group at follow-up: odds ratio 0.90 (95% CI: 0.86-0.94). There was also a 4% reduction in medication dispensed for treating exacerbations of chronic respiratory disease symptoms in the intervention group compared with the control group: relative rate ratio (RRR) 0.96 (95% CI: 0.96-0.97). There was no change in medication dispensed to prevent symptoms of chronic respiratory disease RRR: 1,00 (95% CI: 0.99-1.00). These findings support home insulation interventions as a means of improving respiratory health outcomes.

Source: Indoor Air

DOI: 10.1111/ina.13101

Authors: Caroline Fyfe, Lucy Telfar Barnard, Jeroen Douwes, Philippa Howden‐Chapman, Julian Crane

Institutions: University of Otago, Massey University

Language: English

Topic: Indoor Air Quality and Microbial Exposure

Subfield: Health, Toxicology and Mutagenesis

Field: Environmental Science

Domain: Physical Sciences

SDGs: Good health and well-being, Climate action

Open Access status: hybrid

Estimated APC paid: $4,800