Key result
Age 2-4 years linked to ~71% higher risk of early asthma readmission.
Why the study?
Repeat hospitalisations among asthmatic children burden healthcare systems, and identifying risk factors for readmission may help detect at-risk children and promote effective interventions.
Cohort (n=27,430)
Relative Risk: 1.71 (95% CI 1.49–1.99)
Risk factors for asthma readmission in children vary by timing, with age 2-4 years, ICU admission, and allergy/eczema history significantly increasing the risk of early readmission.
BACKGROUND: Repeat hospitalisations among asthmatic children pose a significant burden on the healthcare system. Identifying risk factors for asthma readmission may help detect at-risk children and promote effective interventions. The study aimed to identify risk factors for asthma readmission among children aged 2-17 years in New South Wales (NSW), Australia. METHODS: A retrospective birth cohort study was conducted using linked administrative data. The study cohort included children born in NSW between 2005 and 2015 who had at least one asthma-related hospitalisation. Risk factors for early and late readmissions, along with their risk ratios, were identified using modified Poisson regression models. RESULTS: From 2007 to 2022, a total of 27,430 children were hospitalised. Among them, 17.9% of children experienced early readmissions, and 82.1% experienced late readmissions. In the adjusted multivariable model, risk factors for early readmissions included children's age 2-4 years (adjusted Relative Risk [aRR] 1.71; 95% confidence interval [CI] 1.49-1.99), no older siblings (1.26; 95% CI 1.11-1.42), length of stay (LOS) ≥ 2days (1.42; 95% CI 1.26-1.61), intensive care unit (ICU) admission (2.27; 95% CI 1.47-3.50), underlying chronic comorbidities and/or congenital anomalies (1.27; 95% CI 1.11-1.46), and having admissions related to allergies or eczema (1.54; 95% CI 1.30-1.83). Risk factors for late readmissions included children's age 2-4 years (1.93; 95% CI 1.80-2.06), no older siblings (1.09; 95% CI 1.04-1.15), residence in the poor neighbourhoods and in major cities, and index admission during spring or summer, LOS ≥ 2days (1.21; 95% CI 1.14-1.27), and having admission related to allergies or eczema (1.40; 95% CI 1.30-1.50). CONCLUSION: Risk factors for asthma readmission among children vary according to the timing of readmission. Risk stratification and targeted post-discharge follow-up for at-risk children may reduce the overall burden of asthma readmissions.
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Rashid et al. (2025) conducted a cohort in Asthma (n=27,430). Risk factors (e.g., age 2-4 years, ICU admission) vs. Absence of respective risk factors was evaluated on Early asthma readmission (aRR 1.71, 95% CI 1.49-1.99). Risk factors for early asthma readmission included age 2-4 years (aRR 1.71; 95% CI 1.49-1.99) and ICU admission (aRR 2.27; 95% CI 1.47-3.50).
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