Temporal trends and socioeconomic differences in acute respiratory infection hospitalisations in children: an intercountry comparison of birth cohort studies in Western Australia, England and Scotland

Objectives Acute respiratory infections (ARIs) are a global cause of childhood morbidity. We compared temporal trends and socioeconomic disparities for ARI hospitalisations in young children across Western Australia, England and Scotland.Design Retrospective population-based cohort studies using lin...

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Main Authors: Pia Hardelid, Ruth Gilbert, Christopher C Blyth, Nicholas de Klerk, Parveen Fathima, Hannah C Moore, Ania Zylbersztejn, Maximiliane Verfürden
Format: Article
Language:English
Published: BMJ Publishing Group 2019-05-01
Series:BMJ Open
Online Access:https://bmjopen.bmj.com/content/9/5/e028710.full
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author Pia Hardelid
Ruth Gilbert
Christopher C Blyth
Nicholas de Klerk
Parveen Fathima
Hannah C Moore
Ania Zylbersztejn
Maximiliane Verfürden
author_facet Pia Hardelid
Ruth Gilbert
Christopher C Blyth
Nicholas de Klerk
Parveen Fathima
Hannah C Moore
Ania Zylbersztejn
Maximiliane Verfürden
author_sort Pia Hardelid
collection DOAJ
description Objectives Acute respiratory infections (ARIs) are a global cause of childhood morbidity. We compared temporal trends and socioeconomic disparities for ARI hospitalisations in young children across Western Australia, England and Scotland.Design Retrospective population-based cohort studies using linked birth, death and hospitalisation data.Setting and participants Population birth cohorts spanning 2000–2012 (Western Australia and Scotland) and 2003–2012 (England).Outcome measures ARI hospitalisations in infants (<12 months) and children (1–4 years) were identified through International Classification of Diseases, 10th edition diagnosis codes. We calculated admission rates per 1000 child-years by diagnosis and jurisdiction-specific socioeconomic deprivation and used negative binomial regression to assess temporal trends.Results The overall infant ARI admission rate was 44.3/1000 child-years in Western Australia, 40.7/1000 in Scotland and 40.1/1000 in England. Equivalent rates in children aged 1–4 years were 9.0, 7.6 and 7.6. Bronchiolitis was the most common diagnosis. Compared with the least socioeconomically deprived, those most deprived had higher ARI hospitalisation risk (incidence rate ratio 3.9 (95% CI 3.5 to 4.2) for Western Australia; 1.9 (1.7 to 2.1) for England; 1.3 (1.1 to 1.4) for Scotland. ARI admissions in infants were stable in Western Australia but increased annually in England (5%) and Scotland (3%) after adjusting for non-ARI admissions, sex and deprivation.Conclusions Admissions for ARI were higher in Western Australia and displayed greater socioeconomic disparities than England and Scotland, where ARI rates are increasing. Prevention programmes focusing on disadvantaged populations in all three countries are likely to translate into real improvements in the burden of ARI in children.
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spelling doaj-art-d2dd9768a41a44b19139841d520e2a282025-08-20T02:18:58ZengBMJ Publishing GroupBMJ Open2044-60552019-05-019510.1136/bmjopen-2018-028710Temporal trends and socioeconomic differences in acute respiratory infection hospitalisations in children: an intercountry comparison of birth cohort studies in Western Australia, England and ScotlandPia Hardelid0Ruth Gilbert1Christopher C Blyth2Nicholas de Klerk3Parveen Fathima4Hannah C Moore5Ania Zylbersztejn6Maximiliane Verfürden7Population, Policy and Practice Research and Teaching Department, University College London Institute of Child Health, London, UKPopulation, Policy and Practice, University College London Great Ormond Street Institute of Child Health, London, UK5 Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Nedlands, Western Australia, Australia1 Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, The University of Western Australia, Perth, Western Australia, Australia1 Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, The University of Western Australia, Perth, Western Australia, AustraliaCurtin School of Population Health, Curtin University, Perth, Western Australia, AustraliaPopulation, Policy and Practice, University College London Great Ormond Street Institute of Child Health, London, UK5 Population, Policy and Practice, University College London Great Ormond Street Institute of Child Health, London, United KingdomObjectives Acute respiratory infections (ARIs) are a global cause of childhood morbidity. We compared temporal trends and socioeconomic disparities for ARI hospitalisations in young children across Western Australia, England and Scotland.Design Retrospective population-based cohort studies using linked birth, death and hospitalisation data.Setting and participants Population birth cohorts spanning 2000–2012 (Western Australia and Scotland) and 2003–2012 (England).Outcome measures ARI hospitalisations in infants (<12 months) and children (1–4 years) were identified through International Classification of Diseases, 10th edition diagnosis codes. We calculated admission rates per 1000 child-years by diagnosis and jurisdiction-specific socioeconomic deprivation and used negative binomial regression to assess temporal trends.Results The overall infant ARI admission rate was 44.3/1000 child-years in Western Australia, 40.7/1000 in Scotland and 40.1/1000 in England. Equivalent rates in children aged 1–4 years were 9.0, 7.6 and 7.6. Bronchiolitis was the most common diagnosis. Compared with the least socioeconomically deprived, those most deprived had higher ARI hospitalisation risk (incidence rate ratio 3.9 (95% CI 3.5 to 4.2) for Western Australia; 1.9 (1.7 to 2.1) for England; 1.3 (1.1 to 1.4) for Scotland. ARI admissions in infants were stable in Western Australia but increased annually in England (5%) and Scotland (3%) after adjusting for non-ARI admissions, sex and deprivation.Conclusions Admissions for ARI were higher in Western Australia and displayed greater socioeconomic disparities than England and Scotland, where ARI rates are increasing. Prevention programmes focusing on disadvantaged populations in all three countries are likely to translate into real improvements in the burden of ARI in children.https://bmjopen.bmj.com/content/9/5/e028710.full
spellingShingle Pia Hardelid
Ruth Gilbert
Christopher C Blyth
Nicholas de Klerk
Parveen Fathima
Hannah C Moore
Ania Zylbersztejn
Maximiliane Verfürden
Temporal trends and socioeconomic differences in acute respiratory infection hospitalisations in children: an intercountry comparison of birth cohort studies in Western Australia, England and Scotland
BMJ Open
title Temporal trends and socioeconomic differences in acute respiratory infection hospitalisations in children: an intercountry comparison of birth cohort studies in Western Australia, England and Scotland
title_full Temporal trends and socioeconomic differences in acute respiratory infection hospitalisations in children: an intercountry comparison of birth cohort studies in Western Australia, England and Scotland
title_fullStr Temporal trends and socioeconomic differences in acute respiratory infection hospitalisations in children: an intercountry comparison of birth cohort studies in Western Australia, England and Scotland
title_full_unstemmed Temporal trends and socioeconomic differences in acute respiratory infection hospitalisations in children: an intercountry comparison of birth cohort studies in Western Australia, England and Scotland
title_short Temporal trends and socioeconomic differences in acute respiratory infection hospitalisations in children: an intercountry comparison of birth cohort studies in Western Australia, England and Scotland
title_sort temporal trends and socioeconomic differences in acute respiratory infection hospitalisations in children an intercountry comparison of birth cohort studies in western australia england and scotland
url https://bmjopen.bmj.com/content/9/5/e028710.full
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