Determinants of Accident and Emergency Attendances and Emergency Admissions in Infants: Birth Cohort Study
Abstract Background: Understanding of drivers in increasing infant accident and emergency (A&E) attendances and emergency hospital admissions across England is limited. We examine variations in use of emergency hospital services among infants by local areas in England and investigate the extent to which infant and socio-economic factors explain these variations.Methods: Birth cohort study using linked administrative Hospital Episode Statistics data in England. Singleton live births between 1 April 2012 and 31 March 2019 were followed up for 1 year; from 1 April 2013 (from the discharge date of their birth admission) until their first birthday, death or 31 March 2019. Mixed effects negative binomial models were used to calculate incidence rate ratios for A&E attendances and emergency admissions and mixed effects logistic regression models estimated odds ratio of conversion (the proportion of infants subsequently admitted after attending A&E). Models were adjusted individual-level factors and included a random effect for local authority (LA).Results: The cohort comprised 3,665,414 births in 150 English LAs. Rates of A&E attendance and emergency admissions were highest amongst: infants born <32 weeks gestation; with presence of congenital anomaly; and to mothers <20-years-old. Area-level deprivation was positively associated with A&E attendance rates, but not associated with conversion probability. A&E attendance rates were highest in the North East (916 per 1000 child-years, 95%CI: 911 to 921) and London (876 per 1000, 95%CI: 874 to 879), yet London had the lowest emergency admission rates (232 per 1000, 95%CI: 231 to 234) and conversion probability (25% vs highest 39% in South West). Adjusting for individual-level factors did not significantly affect variability in A&E attendance and emergency admission rates by local authority.Conclusions: Drivers of A&E attendances and emergency admissions include individual-level factors such being born premature, with congenital anomaly and from socio-economically disadvantaged young parent families. Support for such vulnerable infants and families should be provided alongside preventative health care in primary and community care settings. Substantial geographical variations in rates were not explained by individual-level factors, suggest more detailed understanding of local and underlying service-level factors would provide targets for further research on mechanisms and policy priority.