Home energy efficiency, overcrowding and lower respiratory tract infection admissions in infants: national birth cohort study in Scotland
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Background
We examined whether two key housing quality indicators, energy efficiency and household overcrowding, were associated with lower respiratory tract infection (LRTI) hospital admissions in infants.
Methods
We used a cohort of all singleton births in Scotland 2010-2012, created through linked vital statistics and health data. LRTI admissions were characterised in hospital records. Overcrowding (defined using the national room standard) and median postcode-level energy efficiency were defined using maternal Census and postcode-level Energy Performance Certificate data linked to the cohort, respectively. We used logistic regression to model the odds of at least one infant LRTI admission.
Results
The cohort included 136,123 infants of whom 4.0% had at least one LRTI admission. Overcrowding was more common among infants of younger mothers and those in rented housing. Energy efficiency was lower among infants of older mothers, living in owner occupied homes, in less deprived areas. Compared with infants living in homes with excess rooms (under-occupied housing), those whose homes were below, or met, the minimum room standard had higher odds of LRTI admission (adjusted odds ratio 1.07, 95% CI 0.98–1.17; 1.10, 95% CI 1.03–1.17, respectively). Postcode-level energy efficiency was not associated with LRTI admission odds.
Conclusion
Overcrowding was more common in socioeconomically disadvantaged households and associated with increased risk of LRTI admission in infancy. Lower energy efficiency was associated with factors commonly linked to socioeconomic advantage and was not associated with LRTI admissions. Improving access to housing with adequate living space may reduce the burden of LRTIs in early life.
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