Preterm-born infants have impaired lung development and are particularly vulnerable to environmental exposures, including air pollution. While indoor air contributes substantially to early-life exposure, evidence on effective household-level strategies, particularly those combining real-time feedback with caregiver education, to improve indoor air quality in this population is limited.
In this prospective pre–post intervention study, real-time indoor air quality feedback combined with caregiver education was associated with improvements in indoor carbon dioxide and particulate matter ≤2.5 µm beyond concurrent outdoor and temporal trends. These findings suggest that providing caregivers with immediate, actionable information on indoor air quality may support behaviour change in the home environment, although effects were not observed in households with smokers.
These findings support the potential of combining sensor-based feedback with caregiver education as a scalable household-level strategy to reduce early-life…