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The effects of housing on the health of preterm infants
Insights
Very preterm infants are more vulnerable to adverse housing conditions like overcrowding and gas cooking, which can increase risks of respiratory infections and gastrointestinal illness. Further research is needed to confirm these findings and explore underlying mechanisms.
Area of Science:
- Pediatrics
- Environmental Health
- Epidemiology
Background:
- Very preterm infants (< or = 32 weeks' gestation) face increased health risks in their first year.
- The impact of housing conditions on the health of these vulnerable infants is not fully understood.
Purpose of the Study:
- To investigate the effects of housing on the health of very preterm infants during their first year of life.
- To identify specific housing factors that may increase morbidity in preterm infants compared to term infants.
Main Methods:
- Prospective case-control study involving 117 preterm and 226 term infants.
- Health morbidity data collected via parent-held records.
- Housing data gathered through validated self-completion questionnaires.
Main Results:
- Preterm infants experienced higher rates of upper and lower respiratory tract infections, otitis media, and diarrhoea and vomiting.
- No significant differences in overall housing conditions were observed between preterm and term infants.
- Overcrowding and gas cooking were significantly associated with increased risks of lower respiratory tract infections and diarrhoea/vomiting in preterm infants, but not in term controls.
Conclusions:
- Preterm infants may be uniquely vulnerable to specific adverse housing factors.
- Overcrowding and gas cooking are potential environmental risks for preterm infant morbidity.
- Further research is warranted to elucidate mechanisms and confirm causality.
Abstract:
Using a prospective study based on cases and controls selected from a geographical population, we have investigated the effects of housing on the health of very preterm infants (< or = 32 weeks' gestation) during the first year of life. Information on health morbidity of the 117 preterm and 226 term babies was collected using a parent-held record, and housing data by a validated self-completion questionnaire. The most common health problems in the first year-upper (UR) and lower (LR) respiratory tract infection, otitis media (OM) and diarrhoea and vomiting (DV)-were all more frequent in the preterm group, There were no significant differences in the housing conditions to which preterm and control infants were exposed. Relative risks (RR) and 95% confidence intervals (CI) associated with each housing factor were calculated for preterm and control infants separately. Significant (P < 0.05) interaction effects were found for overcrowding and gas cooking. Overcrowding was associated with an increased incidence of LR [RR = 1.53; CI 0.96-2.42] and DV [RR = 1.57; CI 0.92-2.67] in the preterm, but with a decreased incidence of LR [RR = 0.28; CI 0.04-1.86] and DV [RR = 0.85; CI 0.30-2.38] in the term controls. The use of gas ovens was found to be associated in preterm infants with an increase in LR [RR = 1.48; CI 0.96-2.28] and DV [RR = 2.24; CI 1.28-3.93] but the controls did not show this effect for LR [RR = 0.67; CI 0.40-1.09] or DV [RR = 0.93; CI 0.56-1.56]. These associations are robust-even after allowing for confounding social factors-but causality has not been proved. This work suggests that preterm infants may be vulnerable to specific adverse housing factors, and further studies are now indicated to clarify potential mechanisms and interactive effects behind these associations.